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Old 09-16-2012, 05:08 AM   #1
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95 YJ 4WD electrical question

I wasn't able to find it when I did a search, so I apologize if this has been asked and answered before. While trying to mess with 4WD to see if it worked, I noticed that I wasn't getting the indicator light on the dash. The transfer case is shifting fine, so I went to the vacuum motor on the front axle. One of the wires that runs to the motor is broken, so I figured that would be as good a place to start fixing as any.

My main questions are: Does that wire actually control the shift motor? Additionally, would it be better to try to reconnect the wire to the harness or would I be better off replacing the whole shift motor?

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Old 09-16-2012, 06:24 AM   #2
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The wire should not stop the 4wd from working. It is only there for the indicator lamp. When I installed my lift I broke that wire and have had no issues with 4wd.

The axle should lock via vacuum once the transfer case is shifted into 4wd if the system is still stock. I have a posi-lok on my front axle to eliminate the weak link in the 4wd system (the vacuum motor), in that case you would need to lock the front axle with the posi-lok and shift the transfer case into 4wd.

I would just splice the wire back into the harness.

Hope this helps.

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Old 09-17-2012, 08:55 PM   #3
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Update: Spliced the wiring back together, no joy. Tried driving it in circles with 4WD engaged, didn't notice any difference. I didn't want to try the headache of running down whether it was the vacuum or the shift motor, so I decided to go with the cheap fix option listed in the sticky. Like the true young fool that I am, I managed to snap two of the four bolts that hold the shift motor on the axle.
My new question is would anyone be able to tell me the grade of the bolts, or how to figure that out? Any recommendations for extracting them would be greatly appreciated if anyone has been there before as well.
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Old 09-18-2012, 02:46 PM   #4
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Ouch, I hate it when that happens. Luckily there should hopefully be a nub sticking out of the axle. Keep it soaked with PB Blast or similar and grab it with vice grips and spin it out. If its flush with the axle, you will hafta drill and retap or try an EZ Out. Dunno if they make em that small.

Good luck!
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Old 09-19-2012, 12:04 AM   #5
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Quote:
Originally Posted by -----P-----
Update: Spliced the wiring back together, no joy. Tried driving it in circles with 4WD engaged, didn't notice any difference. I didn't want to try the headache of running down whether it was the vacuum or the shift motor, so I decided to go with the cheap fix option listed in the sticky. Like the true young fool that I am, I managed to snap two of the four bolts that hold the shift motor on the axle.
My new question is would anyone be able to tell me the grade of the bolts, or how to figure that out? Any recommendations for extracting them would be greatly appreciated if anyone has been there before as well.
Lol, did this too buddy. X2^^
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