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Old 02-19-2014, 12:37 AM   #1
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Head lights fog light problem

So I have a issue that seems to come and go. It happened before, and cleared up. It happened again this weekend on a travel trip. I turned on my lights and the pass headlight was dim, less than half as bright as the drivers side one, on low or high breams. I also tried switching on my driving lights and they wouldn't work with the low beams, but did sometimes with the head lights on bright/high? I banged on the dim pass headlight, no change, moved the connector at the back, no change (still dim). Also, prior to the trip, I had to jump start it. I then drove it for over 3 hours to my destination in daylight on my recent trip and around with no issues. It started like normal the whole time over the weekend with no issues at all. Went out today after work and everything is working fine. pass headlight is bright again?

Some other info: Battery is old and If the jeep sits for a week or so, it will crank slow and wont start. Once, I charged the battery while it was in the jeep hooked up to the cables? Problem doing that? I've done that with many other vehicles with no problem.

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Old 02-19-2014, 12:39 AM   #2
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I'd check the connectors and fuse. If those don't yield a problem, chances are it's the the wiring. Worst case scenario it's the bulb. If I were you, I'd throw on some conductor grease on the connectors

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Old 02-19-2014, 10:23 AM   #3
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My wiring is all stock and not altered except for a stereo. Fuse? To my knowledge there either good or gone. Connector, possible, where is the question. I'm woundering about possibly a multi-function switch in the blinker assembly lever? Currently I'm not having issues with the parking or blinker lights.
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Old 02-19-2014, 10:49 AM   #4
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I think that it would be benificial to get a terminal cleaning kit, CRC electrical cleaner, and a can of compressed air or air compressor blow gun.
What I have found is that the connectors are very venerable and suceptiable to corrosion from the intrusion of elements. You may look at the connectors ant they may look alright but scale and so forth may be in there and causing resistance.
If this does not work then use an ohm meter and check voltage starting at the plug and work your way back at each successive plug until you find a voltage drop. You should be able to chase it back to your firewall. Once there you can begin testing the switch.
Try the first method first. It's cheap and an easy afternoon project.
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Old 02-21-2014, 09:06 AM   #5
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Connector, which one and where? Is it the one from the light/turn signal arm?
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Old 02-21-2014, 09:13 AM   #6
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Have you disconnected the battery and cleaned the posts and cable ends and checked the grounds on your lights? Sounds like a bad connection or bad ground to me.
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Old 02-21-2014, 09:15 AM   #7
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Start at the light housing and work your way back. Check every connector in the chain of wires. This is the only way to be sure. It is also what a shop would do but charge you hourly to do it.
I would even say you could check them with an ohm meter then clean them then check them again. This will take care of two birds with one stone. Be sure to check the multiple connectors under your front fenders these are an area of easy corrosion.
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Old 02-21-2014, 10:21 AM   #8
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Quote:
Originally Posted by Rude Dog View Post
My wiring is all stock and not altered except for a stereo. Fuse? To my knowledge there either good or gone. Connector, possible, where is the question. I'm woundering about possibly a multi-function switch in the blinker assembly lever? Currently I'm not having issues with the parking or blinker lights.
Double check the fuse. There isn't just good and gone. Don't check for continuity check for resistivity. I ran into this issue before on a Tacoma. Fuel pump fuse only half blew. It took 2 days and rewiring half the truck to figure it out. I kept checking for continuity.

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