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Unread 02-16-2012, 01:09 PM   #1
jamie0921
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1973 CJ5 
 
Join Date: Dec 2011
Location: sunrise beach, missouri
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Headlights out prking lights on

Fuses are good interior lights and dimmer work parking lights work if anyone has thoughts on this let me know can't figure it out

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Unread 02-16-2012, 01:11 PM   #2
csabens
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check the ground wires behind each headlight bucket
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Unread 02-16-2012, 01:48 PM   #3
jeepaddict1
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Mine did that the other night. I checked everything--fuses, grounds, connections and couldn't find anything. I hadn't driven it in a while. I stepped on the dimmer switch on the floor board and they started working. I guess with the humidity and not being used for a while, there may have been a little corrosion on the contact. They work fine now. I hope that your issue is an easy fix like that.
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Unread 02-16-2012, 01:58 PM   #4
teh603
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1963 CJ5 
 
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I've had the same issues on a VW Karmann Ghia, and the workaround was always to toggle the dimmer switch to high beams and back. Not entirely sure what causes it, though. Old worn switch contacts maybe? The VW has all original switches and relays, while the ones in dad's Thing (which has never had that issue) have all been replaced at least once before.
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Unread 02-16-2012, 02:12 PM   #5
jamie0921
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I checked grounds all dream good and I hit the low to high beams and the would flash inbetween high and low but now nothing
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Unread 02-16-2012, 02:29 PM   #6
jamie0921
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Could it be the dash mounted switch
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Unread 02-16-2012, 02:34 PM   #7
teh603
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How old is your dimmer switch and headlight switch? Somehow this doesn't feel like a main switch problem, but a dimmer one.
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Unread 02-16-2012, 02:49 PM   #8
LT1CJ7
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Quote:
Originally Posted by jamie0921 View Post
I hit the low to high beams and the would flash inbetween high and low but now nothing
Sounds like dirty/bad contacts, Replace the dimmer switch.
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Unread 02-16-2012, 02:58 PM   #9
jamie0921
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Quote:
Originally Posted by teh603
How old is your dimmer switch and headlight switch? Somehow this doesn't feel like a main switch problem, but a dimmer one.
Not sure but it looks good looks new the dimmer that is I took it apart everything seems good the headlight switch looks a little old .is there a way to test them, or is there a relay on the fuse box I should check don't wanna replace stuff that works
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Unread 02-16-2012, 03:40 PM   #10
jamie0921
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Anyway it's a dd and I need light to get to work so if anyone can figure this out or has anymore ideas I'd love to hear from you thanks
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Unread 02-16-2012, 05:16 PM   #11
jamie0921
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Fixed it inside harness for the dash switch one wire was touching enough to light up the test light but it was actually an arc .so tightened connector and reconnected and it is bright again
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Unread 02-17-2012, 02:45 AM   #12
John Strenk
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Quote:
Originally Posted by jamie0921 View Post
Fixed it inside harness for the dash switch one wire was touching enough to light up the test light but it was actually an arc .so tightened connector and reconnected and it is bright again
Yep, one of the problems with troubleshooting electronics. Sometimes there can be enough contact so the test equipment shows everything is OK but put a load on it and it can't handle the current.

Seen a lot of burnt up headlight plugs because of that. they get loose and overheat and melt the plastic plug around it.
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Unread 02-17-2012, 03:20 AM   #13
jamie0921
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That's exactly what I was getting into I'm glad it happen now because I caught it early enough to save the harness
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Unread 02-17-2012, 03:21 AM   #14
jamie0921
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Location: sunrise beach, missouri
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Quote:
Originally Posted by John Strenk

Yep, one of the problems with troubleshooting electronics. Sometimes there can be enough contact so the test equipment shows everything is OK but put a load on it and it can't handle the current.

Seen a lot of burnt up headlight plugs because of that. they get loose and overheat and melt the plastic plug around it.
Now if I can just figure out this dang fuel gauge its driving me crazy
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