heater motor resistor replacemrnt - Mustang Boards

V6 Tech Forums For all your 3.8L and 4.0L needs!

Thread Tools Search this Thread
Old 08-10-2017, 07:59 AM
Junior Member
Thread Starter
Join Date: Aug 2017
Posts: 2
Default heater motor resistor replacemrnt

If your heater motor only works on the high setting, you probably need to replace the resistor provided the motor works at all.

The resistor is located to the right of the heater motor on the bottom of the plenum behind the glove box. I found the most convenient way to gain access to it is to remove the glove box completely. Open the box, empty it, and close it. Remove the 4 screws from the hinge (you'll need a 7 mm socket to do this). Open the box and push in on both sides to release the stops. The box should fall out into your hands.

The resistor is the small connector closest to the glove box opening. Push in on the tab on the connector and pull it down to disconnect it. There are 2 screws holding the resistor to the plenum. Remove them (you'll need an 8 mm socket for this). The resistor will drop out of the plenum.

I checked mine with an ohm meter and found that the reading between any 2 pins was either OL (open line) or 0.0 (shorted), both of which means deceased. Advanced Auto parts had one in stock (BWM #RU1133 for $25.49 + tax). If you're patient, you can get them for less than that on line. I told the clerk I was going to plug it in in the parking lot and, if it didn't work, could I bring it back? (An advantage to dealing with the store.) He said yes. It worked.

There are 2 guide rails on the plug so it can only installed 1 way. Push it in till it clicks. There are 2 locating pins protruding from the plenum so that the resistor can only be installed 1 way. Insert it into the plenum with the tab on the connector facing the center of the car. Position it on the locating pins and install the 2 screws.

The trick to installing the glove box is to position it in the opening, push in on the sides so they enter the opening, line the top of the box with the top of the opening, and close it till it latches. Now you don't have to juggle it while you install the hinge screws.

This was my experience with my 2006 Mustang. I would think that this would work with any model year between 2005 and 2008. If you're young and really, really flexible, you might get away without removing the glove box.

Jim Birke
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
blower motor resistor stanggt01 General Tech Forum 5 12-17-2016 03:58 PM
How to replace your blower motor resistor.... Rejekt The Reference Section 5 12-17-2016 03:55 PM
Is this the resistor I need for my A/C and Heat????? PistonsFan102 General Tech Forum 5 12-23-2008 04:35 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -7. The time now is 09:28 AM.

© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.