Blower Motor Resistor Wiring Diagram. A wiring diagram will show you where the cables should be connected, removing the need for guesswork. You can avoid making errors if you use a wiring diagram to discover out what wires go where.Dec 16, 2013 · sounds like the drivers temp door actuator is not working should be located on the drivers side of the air box down by the gas pedal or center dash area. Electrical Problem 1994 Buick Lesabre. GM usually puts the Fuse Diagram in the Back of the Owners Manual. cruise control won't work, 10 amp. fuse in fuse box under hood ok. May 30, 2022 · BLOWER RESISTOR BLOCK WIRING DIAGRAM (NEGATIVE SWITCH CONTROL)Sa video na ito ay ipapakita ko sa inyo ang wiring diagram ng blower resistor block. Kaya't pan... Aug 3, 2023 · The blower motor resistor controls the fan speed of your vehicle’s blower motor. A faulty blower motor resistor hampers the operation of the heating and air conditioning system. If your air-conditioning fan only works at some speeds but not at others, then the resistor might be suspect. Aug 5, 2019 · The problem is in the wiring harness or the resistor for the blower motor. Its not the usual 1 3 that doesnt work none of the chevrolet 2004 colorado question. Wiring diagram for blower motor in 2004 chevy impala motor wire. Wiring diagrams before you call a ac repair man visit my blog for. Options. Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Many Dodge forums tell of this problem. Good luck.Buy Now!New Blower Motor Resistor from 1AAuto.com http://1aau.to/ib/1AHBR00086The heat and air condition fan is controlled by a separate module, called the b...Feb 21, 2021 · Good evening and thank you for requesting me! The blower motor resistor will be mounted right next to the blower motor. It will have a 4 or 5 pin plug and it's mounted in the hvac case right next to the blower so that it always has air flow to keep it cool. I'll see if I can send you a parts diagram. Are any of the controls working? Blower Motor Resistor Wiring Diagram. A wiring diagram will show you where the cables should be connected, removing the need for guesswork. You can avoid making errors if you use a wiring diagram to discover out what wires go where.This is a great write-up by the way, thanks very much for doing this. A couple of things that I would add: If you are like me and like to test things out before putting it all back together, you need to realize that the giant green resistor gets very hot when it is being used, in fact it depends on the same air that it controls and is blowing by it to cool off.SOURCE: 1999 expedition 5.4L eddy bauer check fuses,check power and ground at blower motor.if the blower has only one speed it will mean a resistor is shot.an easy test if blower is not working at all is to turn blower on hi and tap on the bottom of blower motor with hammer if the blower motor kicks in then you know the motor is the problem.if the motor still does not work,the wiring to the ...Jun 14, 2016 · so i have replaced the resistor and wiring harness and ac worked great for 3 days, now nothing. i replaced the blower motor and still nothing. i am showing 12-15v at each fan setting, 0v through the ground, and 12-15v from the resistor to the blower motor through the black wire. all fuses are appear to be ok and i am at a loss. Feb 4, 2022 · The most common causes for AC fan blower motor not working in Ford Fiesta are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. 1. # 1 low speed .Looking at a wiring diagram I would think that impossible . # 1 position for low speed would need to go through all the resistors in the resistor pack , which would mean all others good . # 5 high speed doesn't use resistors . uses a relay an direct B+ to the blower motor .Slide it toward the rear of the vehicle to remove it. Figure 3 The green arrow points to the blower motor resistor and the red arrow points to the blower motor. All testing will be performed at the resistor. Figure 4 Start by connecting your DVOM to the power feed. Connect your red lead to terminal 4.helpful. answers. The blower motor brushes may be worn down, when that happens, a bump or vibration may cause the blower motor to start running again. If that is the problem, the fix is a new blower motor. When problem is ongoing, check blower motor wiring connector for voltage and ground, if both are good and no blower action, what else could ...On a 66 heater (no ac car) the blower fan power is fed via the orange wire from the heater motor. That wire goes back through the bulkhead connector, so check and clean that connection. From there it goes to the heater blower resistor, inside the car, on top of the heater box under the glove box.Dec 27, 2014 · # 1 low speed .Looking at a wiring diagram I would think that impossible . # 1 position for low speed would need to go through all the resistors in the resistor pack , which would mean all others good . # 5 high speed doesn't use resistors . uses a relay an direct B+ to the blower motor . Aug 22, 2023 · The average replacement cost of a blower motor resistor is between $90 and $175. Expect to spend about $40 to $100 on the part and another $50 to $75 for labor if you can’t perform the replacement yourself. However, you should bear in mind that the most common reason for a bad blower motor resistor is due to a bad fan motor. Jul 2, 2009 · It seems, too, that the black ground wire on the blower motor (accessible from just below the dash) has NO ground potential. I ghetto jumpered a 16 gauge wire from the back of the metal clip on the ground wire to the dashboard impact bar/brace and the fan turns at variable speeds with the knob! All positions of "on" work - low, medium, high ... Sep 17, 2014 · Wiring diagram for 1999 nissan maxima blower switch. Replaced blower motor resistor but fan for heat and ac works on high only. suspect switch is bad. would like wiring diagram for blower motor switch to test switch to verify its bad. Posted by Anonymous on Sep 17, 2014. The average replacement cost of a blower motor resistor is between $90 and $175. Expect to spend about $40 to $100 on the part and another $50 to $75 for labor if you can’t perform the replacement yourself. However, you should bear in mind that the most common reason for a bad blower motor resistor is due to a bad fan motor.2003 dodge durango blower motor resistor wiring diagram. Clicking this will make more experts see the question and we will remind you when it gets answered. Disconnect and isolate the battery negative cable. Open the glove box. Flex both sides of the glove box bin inward near the top far enough for the rubber glove box stop bumpers to clear the ...Aug 28, 2020 · looking at diagram 68/69 diagram ( 70 maybe the same ? ), High speed is a straight feed from the switch not going through the resistor block, just like 71/74 are. Its spliced into the resistor block just to use that wire to source the output from resistor block to the blower with the speed selected using just one wire for the blower. Heater blower motor randomly stopped working. Put 12v to the fan and it spins. Bought a replacement fan with a new resistor module Tried different climate control module Checked all wiring from fan to climate control module to fuse box. All is good and getting 12v. Checked fuses and relays 2007 GTIUnderstanding the Wiring Diagram for a Blower Motor Resistor. To properly understand a wiring diagram for a blower motor resistor, it is important to understand how the components work together. The diagram will show the connection between the board, resistor, switches, and thermal fuse.Followed these instructions and found a break in the connection between wire and connector in one of the wires of the adaptor. How this came to be, is a mystery but I managed to open the little female metal pin connector at the end of the wire, reattach it with fiddling and some tape en reassembled the thing. Works perfect for now. Import Direct Ignition 4 Terminal Blower Motor Resistor - 30-0117. Your vehicle's blower motor resistor controls the speed of your blower motor. When you turn a knob to produce more air flow for heat or cool air, the resistor adjusts the electrical resistance to control the power sent to your blower motor.Jan 3, 2012 · anythingonwhlz Discussion starter · Jan 3, 2012. Happy New Years to all. Im in the middle of trying to figure out why my heater is not blowing. So I figure Id check the wiring on it. So can someone please post a complete wiring schematic of the heater/blower fan set-up from the fuse box to the switch to the fan motor? No, the resistor will easily come off and rep-connect. Just trace the red/back from the resistor and you'll find it plugs into the fan motor. That is the easiest part of this repair, the splicing of wires is the hardest. As smith mentioned, pay attention to the wire order so you don't do what I did first.Dec 9, 2020 · Buy Now!New Blower Motor Resistor from 1AAuto.com http://1aau.to/ib/1AHBR00086The heat and air condition fan is controlled by a separate module, called the b... Jan 14, 2009 · 7. 72ElCamino · #3 · Jan 15, 2009. Re: 71 blower motor resistor wiring. grumpyschevelle said: I was able to find a previos thread that mentioned the relay wiring and what wire went to what terminal blade. Im still at a loss on the wiring that goes to the blower motor resistor though. Followed these instructions and found a break in the connection between wire and connector in one of the wires of the adaptor. How this came to be, is a mystery but I managed to open the little female metal pin connector at the end of the wire, reattach it with fiddling and some tape en reassembled the thing. Works perfect for now.Sep 17, 2014 · Wiring diagram for 1999 nissan maxima blower switch. Replaced blower motor resistor but fan for heat and ac works on high only. suspect switch is bad. would like wiring diagram for blower motor switch to test switch to verify its bad. Posted by Anonymous on Sep 17, 2014. SOURCE: 1999 expedition 5.4L eddy bauer check fuses,check power and ground at blower motor.if the blower has only one speed it will mean a resistor is shot.an easy test if blower is not working at all is to turn blower on hi and tap on the bottom of blower motor with hammer if the blower motor kicks in then you know the motor is the problem.if the motor still does not work,the wiring to the ...Ford blower motor resistor problems remain the most common solution to interior fan malfunctions on Ford cars and trucks. With that said, failed blower resistor assemblies don't solve all of the possible failures. This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. The interior fan is powered through two ...Aug 3, 2023 · Figure 1 If your blower or fan motor runs at full speed regardless of the setting you have it on there is a very good chance your resistor is bad. The resistor is located below the blower motor in the cabin air box (red arrow). Please see our article on blower motor replacement for additional assistance on removing the motor. miami5th said: If you buy the Mopar kit with the upgraded resistor you have to swap the wire orientation coming from the resistor to the blower motor. I believe it's a green and black wire set. I just focused on the plug that goes into the blower motor. No need to slice and splice to change the wire orientation.The wiring diagram of the blower motor resistor is shown below. The following diagram shows how the resistor is connected to a car. The resistor has the highest fan speed setting that will be bypassed within this car & the blower motor can be power-driven through the switch of a fan.SOURCE: I need a diagram for The blower motor is a variable speed motor. The higher the voltage applied to the motor, the faster the speed. Depending on the HVAC (Heater Ventilation Air Conditioning) option installed in the vehicle, blower speed control could be through a set of resistors or through a solid-state blower motor control module.Battery voltage to the blower motor is supplied by ...2008 Chevy Colorado Blower fan mystery. My a/c blower motor quit working on my 08 Colorado. I replaced the resistor and checked the ground connections. The fan motor plug shows 12v on the meter but the fan does not come on when it is plugged in. If I hot wire the fan motor directly to the battery, the fan runs full speed.Jeep Master. 21,873 Answers. Well, not exactly. The blower switch gets power from the control panel that gets power from the 25amp fuse in the fuse box. The wire from the fuse box to the control panel is black and tan, the wire from the control panel to the fan switch is yellow and brown. Posted on Aug 24, 2012.mentions fuses keep popping, i removed the dash panels to access the blower motor etc, pulled wiring harness out and load tested all wiring coming from blower motor to HVAC controller, all good. have good 12V supply (Pin1) and good Ground (Pin3), at the blower motor connector. pins 4 and 6 only have a max of The blower motor consists of the blower fan and motor. A sirocco fan has been adopted for the blower fan. Operation. 1. The front body control module (FBCM) turns on the blower relay based on the blower ON signal sent from the climate control unit. 2. When the blower relay turns on, the blower motor fan rotates. 3. The rotation speed of the ...The kit that Toyota recommends is 87138-04070 (resistor) and wiring adapter (82141-04Q80). This resistor has the terminals in a square pattern rather than a line. I'm assuming this is from a 3rd gen and hopefully changes were made to fix the well known issue.Jul 10, 2018 · A. adamjeeps · #3 · Jan 4, 2019 (Edited) Jeannecar said: I would like to hear from anyone who has had their blower motor for the A/C go out along with resistor wire melting. I just had this happen at 42k miles so not under way...cost is $850.00 to fix due to blower motor, resistor wire and harness plug. I was told this happens as the blower ... Feb 4, 2022 · The most common causes for AC fan blower motor not working in Ford Fiesta are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. 1. sounds like the drivers temp door actuator is not working should be located on the drivers side of the air box down by the gas pedal or center dash area. Electrical Problem 1994 Buick Lesabre. GM usually puts the Fuse Diagram in the Back of the Owners Manual. cruise control won't work, 10 amp. fuse in fuse box under hood ok.The black wire pin should be ground, one should be 12 volts coming in , the other 3, low fan, mid fan, and high which should bypass resistor completely. One of the other guys can maybe help beyond that with testing, but besides the ground, I'd test on ohm scale of your meter and see what you get between old resistor, and new.Oct 19, 2010 · Like. abernut Discussion starter · #10 · Oct 21, 2010. That indeed was the correct wire. I plugged it in to the blower, got back in the cab, turned the key and with a little bit of hesitation turned the heater knob to Max. The **** eating grin I had on my face when I heard the blower fire up was priceless.:2thumbsup: Re: 72 C10 heater/ A/c wiring diagram. Just rebuilt my factory AC and here is what I found - I had the opposite problem than you - my low and med speeds weren't working but high was. The high side is your relay and it is mounted to the heater box behind the glove box. The low and med speeds are resistor related.Buy Now!New Blower Motor Resistor from 1AAuto.com http://1aau.to/ib/1AHBR00086The heat and air condition fan is controlled by a separate module, called the b...Blown heater motor resister, melted speed switch, melted wires in steering column. The Fix: Adding relays in the heater circuit. You will also need to replace your blower motor resistor, and selector switch if you have not already done so. Parts Needed: 4 relays. 10 feet red 12 gauge wire.1 4 Watt Resistor Footprint. January 06, 2017. The Size Of Smd Ics Electronics Repair And Technology News. Common Resistance Values Mark Gurries. 1 Watt Resistor Size 1 Watt Resistor Size Suppliers And. Wattage Rating. Chapter1 Html. Resistors Learn Sparkfun Com. In Eagle What Resistor Should I Choose In My Schematic.Blower Wiring Diagram for 2010 F150. I need a blower wiring diagram &/or advise for a 2010 F150, 5.4L, 2009-2014 should be the same. Can't find diagram here or on Google. Most of the time my blower does not work but it comes on about once a week, in high I think but not very strong. I replaced the fan resistor but that didn't help.Aug 14, 2019 · The kit that Toyota recommends is 87138-04070 (resistor) and wiring adapter (82141-04Q80). This resistor has the terminals in a square pattern rather than a line. I'm assuming this is from a 3rd gen and hopefully changes were made to fix the well known issue. The black wire pin should be ground, one should be 12 volts coming in , the other 3, low fan, mid fan, and high which should bypass resistor completely. One of the other guys can maybe help beyond that with testing, but besides the ground, I'd test on ohm scale of your meter and see what you get between old resistor, and new.Slide it toward the rear of the vehicle to remove it. Figure 3 The green arrow points to the blower motor resistor and the red arrow points to the blower motor. All testing will be performed at the resistor. Figure 4 Start by connecting your DVOM to the power feed. Connect your red lead to terminal 4.On my 1066, though, the blower has a similar wiring setup. The three wires from the motor are indeed the speeds. If you put 12v of power to each one in turn, the motor should run at whatever speed you have powered. One terminal on the switch should have battery power. The other may be for powering an air conditioner unit.Aug 14, 2019 · The kit that Toyota recommends is 87138-04070 (resistor) and wiring adapter (82141-04Q80). This resistor has the terminals in a square pattern rather than a line. I'm assuming this is from a 3rd gen and hopefully changes were made to fix the well known issue. Nov 8, 2018 · Changed blower resistor, pigtail and blower motor and it's still not working. Did the same 14 months ago and it corrected the problem. Not sure if the wires aren't connected correctly or if there coul … mentions fuses keep popping, i removed the dash panels to access the blower motor etc, pulled wiring harness out and load tested all wiring coming from blower motor to HVAC controller, all good. have good 12V supply (Pin1) and good Ground (Pin3), at the blower motor connector. pins 4 and 6 only have a max of 3Ø WIRING DIAGRAMS 1Ø WIRING DIAGRAMS Diagram ER9 M 3~ 1 5 9 3 7 11 Low Speed High Speed U1 V1 W1 W2 U2 V2 TK TK Thermal Overloads TWO SPEED STAR/DELTA MOTOR Switch M 3~ 0-10V 20V 415V AC 4-20mA Outp uts Diagram IC2 M 1~ 240V AC 0-10V Outp ut Diagram IC3 M 1~ 0-10V 4-20mA 240V AC Outp uts These diagrams are current at the time of publication ...The black wire pin should be ground, one should be 12 volts coming in , the other 3, low fan, mid fan, and high which should bypass resistor completely. One of the other guys can maybe help beyond that with testing, but besides the ground, I'd test on ohm scale of your meter and see what you get between old resistor, and new.The wiring diagram for a blower motor resistor consists of three main components: the power supply, the ground, and the blower motor. The power supply is the source of electricity for the blower motor, and the ground is the return path for the current.Version. Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 1998-2001 Dodge Ram . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital ... S. srraviindran Discussion starter · Mar 20, 2018 (Edited) E90, 320d 2012, The a/c blower unit circuit is not receiving signal, checked panel switch, blower resistor, and just wont get voltage. Rechecked ac heater, blower module, no supply reaching.Blower resistors are resistors which are used to control the fan speed of automotive blowers. The fan speed can be changed either by switching the blower resistor resistance mechanically using a rotating lever, or electronically by the air conditioning system. The change in resistance then limits the current through the motor, which dictates ... blower motor issue. I have 2007 colorado 4x4 crew cab with 5 cylinder. My heater/ac blower motor does not work on any of the settings. I removed the wire from the splice pack and cleaned it up box next the air filter and put a connector and bolted to the fender. I replaced the resistor, replaced the wiring harness, and replaced the blower motor.The most common causes for AC fan blower motor not working in Chevy Malibu are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. 1.Heater blower motor randomly stopped working. Put 12v to the fan and it spins. Bought a replacement fan with a new resistor module Tried different climate control module Checked all wiring from fan to climate control module to fuse box. All is good and getting 12v. Checked fuses and relays 2007 GTIIt seems, too, that the black ground wire on the blower motor (accessible from just below the dash) has NO ground potential. I ghetto jumpered a 16 gauge wire from the back of the metal clip on the ground wire to the dashboard impact bar/brace and the fan turns at variable speeds with the knob! All positions of "on" work - low, medium, high ...helpful. answers. The blower motor brushes may be worn down, when that happens, a bump or vibration may cause the blower motor to start running again. If that is the problem, the fix is a new blower motor. When problem is ongoing, check blower motor wiring connector for voltage and ground, if both are good and no blower action, what else could ...The blower motor consists of the blower fan and motor. A sirocco fan has been adopted for the blower fan. Operation. 1. The front body control module (FBCM) turns on the blower relay based on the blower ON signal sent from the climate control unit. 2. When the blower relay turns on, the blower motor fan rotates. 3. The rotation speed of the ... Connect the wire harness to the blower motor resistor… and engage the wire harness connector locking tab. To reinstall the glove box, put it in position and turn it slightly sideways… so...Nov 16, 2015 · All control of the blower operation is done using the ground side of the circuit. You should always have 12 volts at the brown wire of the blower connector. You won't get 12 volts by metering the brown and orange leads, if the ground is defective. There aren't any HVAC grounds in the ground point on the left side. The blower motor resistor controls the fan speed of your vehicle’s blower motor. A faulty blower motor resistor hampers the operation of the heating and air conditioning system. If your air-conditioning fan only works at some speeds but not at others, then the resistor might be suspect.Connect the wire harness to the blower motor resistor… and engage the wire harness connector locking tab. To reinstall the glove box, put it in position and turn it slightly sideways… so...Nov 2, 2015 · On a 66 heater (no ac car) the blower fan power is fed via the orange wire from the heater motor. That wire goes back through the bulkhead connector, so check and clean that connection. From there it goes to the heater blower resistor, inside the car, on top of the heater box under the glove box. Blown heater motor resister, melted speed switch, melted wires in steering column. The Fix: Adding relays in the heater circuit. You will also need to replace your blower motor resistor, and selector switch if you have not already done so. Parts Needed: 4 relays. 10 feet red 12 gauge wire.Apr 20, 2020 · OPGI has pictures of both the three-prong blower motor resistor for 1968 with AC # CH31821 ($25) and the four-prong blower motor resistor for 1969-72 with AC # CH31592 ($46) -Frank. 1970 Chevelle Malibu purchased new in 1970. 355 SBC, XE262H cam, Performer RPM heads, MSD HEI, TH200-4R trans, 3.55:1 Posi, digital gauges, QA1 coilovers. Ok, I replaced the, ac controller unit, wiring connector, and blower motor. With the new parts, the system is functional however one problem still persists which is: The Blower Resistor heats up like a hot plate when the system is on. I tried both the original resistor and the new one and both had the same overheating problem. 1.Once you have the right diagram, follow these steps to install it: 1) remove the old resistor 2) disconnect the wire harness. 3) connect the new resistor 4) reinstall the wire harness 5) test the new resistor by turning on the blower motor. If it works, you’re all set!Version. Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 1998-2001 Dodge Ram . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital ...Followed these instructions and found a break in the connection between wire and connector in one of the wires of the adaptor. How this came to be, is a mystery but I managed to open the little female metal pin connector at the end of the wire, reattach it with fiddling and some tape en reassembled the thing. Works perfect for now. made sure the blower fan could spin and made sure no obstructions 2a. cleaned the cabin filters 3. can power up the blower directly with a different power source and it works 4. blower relay checked out okay 5. blower resistor checked out okay 6. downloaded a manual to look at wiring diagrams - where i'm currently at, to see what I could also ...
Nov 8, 2018 · Changed blower resistor, pigtail and blower motor and it's still not working. Did the same 14 months ago and it corrected the problem. Not sure if the wires aren't connected correctly or if there coul … . Wherepercent27s party city
anythingonwhlz Discussion starter · Jan 3, 2012. Happy New Years to all. Im in the middle of trying to figure out why my heater is not blowing. So I figure Id check the wiring on it. So can someone please post a complete wiring schematic of the heater/blower fan set-up from the fuse box to the switch to the fan motor?Blower resistors are resistors which are used to control the fan speed of automotive blowers. The fan speed can be changed either by switching the blower resistor resistance mechanically using a rotating lever, or electronically by the air conditioning system. The change in resistance then limits the current through the motor, which dictates ...Aug 24, 2012 · Jeep Master. 21,873 Answers. Well, not exactly. The blower switch gets power from the control panel that gets power from the 25amp fuse in the fuse box. The wire from the fuse box to the control panel is black and tan, the wire from the control panel to the fan switch is yellow and brown. Posted on Aug 24, 2012. Aug 3, 2023 · Figure 1 If your blower or fan motor runs at full speed regardless of the setting you have it on there is a very good chance your resistor is bad. The resistor is located below the blower motor in the cabin air box (red arrow). Please see our article on blower motor replacement for additional assistance on removing the motor. Blower Motor Resistor Wiring Diagrams. A blower motor resistor works by routing power through 1, 2, or 3 in-series resistors. See the blower motor resistor wiring diagrams below to see how it works on each speed. Posted on June 26, 2020 by Rick Muscoplat. eautorepair.net.Jan 14, 2009 · 7. 72ElCamino · #3 · Jan 15, 2009. Re: 71 blower motor resistor wiring. grumpyschevelle said: I was able to find a previos thread that mentioned the relay wiring and what wire went to what terminal blade. Im still at a loss on the wiring that goes to the blower motor resistor though. No, the resistor will easily come off and rep-connect. Just trace the red/back from the resistor and you'll find it plugs into the fan motor. That is the easiest part of this repair, the splicing of wires is the hardest. As smith mentioned, pay attention to the wire order so you don't do what I did first.To install: Align and install the blower motor into the HVAC housing. Install the three screws that secure the blower motor to the HVAC housing. Tighten the screws to 20 inch lbs. (2.2 Nm). Connect the wire harness connector to the blower motor. Reconnect the battery negative cable.Jeep Master. 21,873 Answers. Well, not exactly. The blower switch gets power from the control panel that gets power from the 25amp fuse in the fuse box. The wire from the fuse box to the control panel is black and tan, the wire from the control panel to the fan switch is yellow and brown. Posted on Aug 24, 2012.The blower motor resistor controls the fan speed of your vehicle’s blower motor. A faulty blower motor resistor hampers the operation of the heating and air conditioning system. If your air-conditioning fan only works at some speeds but not at others, then the resistor might be suspect.Hooked the brown wire to the positive battery terminal, the yellow to the negative, I heard the fan spin- so, the fan blower is operational. Step 2. If that works reconnect them. Turn the ignition on. Take the wire, should be yellow, off of the resister on the heater box and ground it. The fan should also spin.Jan 3, 2012 · anythingonwhlz Discussion starter · Jan 3, 2012. Happy New Years to all. Im in the middle of trying to figure out why my heater is not blowing. So I figure Id check the wiring on it. So can someone please post a complete wiring schematic of the heater/blower fan set-up from the fuse box to the switch to the fan motor? .