Originally Posted by BIRICON View Post
A phillips screwdriver and 3 screws to remove the front bezel, 4 more screws to remove the speed/mode switch console, is all that is necessary to gain access to do the mod. Need to be able to solder and have tops of 45 minutes to do it. Simple and very easy to do. I have done it now about 24 times.
The resistors fail and switch/wiring melts because of old blower motors supposedly drawing excess amounts of current. I don't know how much current a new/good motor should draw, but it would be nice to know. That way if the current draw can be measured people could decide if a replacement blower motor would be the best way of preventing the problem recurring. Might even measure mine over the weekend, my multimeter will handle 20A which should be plenty.
Jp magazine that started the relay mod started having it fail and now recommends a new fan and switch. Saying the new fan would have less resistance. I bought little circuit board heat sinks off amazon and made the back of my switch look like a copper porcupine. Still using old fan and have had no issues since. It is my third switch and second resistor. (Made resistor look like a copper porcupine too) seems like the ac duct behind the switch makes it down right cold now. My aftermarket aluminum knob gets cool to the touch.
|2001 , ac , tj|
|Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)|
|Thread||Thread Starter||Jeep Forums||Replies||Last Post|
|a/c blower only works on high||DezertTJ||TJ Wrangler Technical Forum||9||05-29-2010 03:05 PM|
|YJ Fan only works on HIGH||bestos||YJ Wrangler Technical Forum||14||12-14-2008 03:15 PM|
|AC fan only works on high?||theiastcowboy||TJ Wrangler Technical Forum||4||03-08-2008 04:54 PM|
|4 Low works, 4 High does not||littleman66||TJ Wrangler Technical Forum||6||01-16-2008 04:52 PM|
|Fan only works on high||35sUnlimited||TJ Wrangler Technical Forum||3||12-06-2006 09:16 PM|