Question about 1985 Jeep CJ7
I have a 1985 CJ-7, my problem is the headlights will cut off after about 15 minutes of driving. It does not matter if the engine is running or not once this starts to happen they just switch on and off like I am flashing for a cop or something. Switching the high beams on seems to bring it on also. Only the headlights are affected, the parking lights and tail lights all work. I asked a mechanic friend about it and he said it is not a short but a ground problem. Does this sound right? If so, where do I find the ground wires to check them? Once this starts, if I let it cool down for a couple of minutes, then its ok again for a little while. Thanks Terry
Check you high\low beam connector...I had the same problem with mine and it was in that connector
Posted on Mar 17, 2009
Just replace your headlight switch, mine use to do the same thing. There cheap, you can get one at your autoparts store and it take 5 mins to put it in.
Posted on Dec 24, 2008
If it is truly a ground problem you should be able to do the following.
NOTE* Sometimes finding the root of a ground problem in a wiring harness can be very time consuming and also drive you nuts.
First you need to establish if it is indeed a ground problem.
Check your fuses and make sure that none of them are bad or loose.
Look at the back of the headlight switch and determine if the connection is solid.
Do the same with each headlight. If you find a dirty connector then clean it gently and re-connect it.
Try the headlights again... If the same thing happens continue.
IF YOU ARE NOT MECHANICALLY INCLINED, FIND SOMEONE WHO IS FOR THE NEXT PART!
On the headlight connector there are usually 3 wires. 1 low beam, 1 high beam, and 1 ground,
Find the ground wire from the headlights and provide a solid temporary ground by adding an additional
wire into the ground socket. DO NOT CUT EXISTING ELECTRICAL WIRES ON YOUR CAR!!! Get a length of Electrical wire and strip off about 1 inch of the coating from each end. Find which socket is the ground, and slip the new wire into the socket with the bulb.
Take the other end of the wire and fasten it to a grounded area, "something made of steel, like the frame or part of the engine. NOT ALUMINUM...
Try the headlights again... If it works ok then you do have a ground problem.
The options now are to either secure everything down "as is" and consider it fixed, or, take it to a shop and have them fix the ground the way it should be fixed.
This is only ONE way to diagnose a ground problem but NOT the only one.
If it does not work then it is something else other than a ground, like a switch.
Posted on Nov 22, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Oct 11, 2011 | 1985 Chevrolet Chevy
Mar 12, 2011 | 1985 Jeep CJ7
Mar 11, 2010 | 1985 Ford F150
Mar 09, 2010 | 1985 Jaguar XJ6
Jan 01, 2010 | Jeep CJ Cars & Trucks
Oct 06, 2009 | 1998 Ford Explorer
Mar 17, 2009 | 1985 Chevrolet Chevy
351 people viewed this question
Usually answered in minutes!