Headlights out prking lights on - JeepForum.com

 
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post #1 of 14 Old 02-16-2012, 01:09 PM Thread Starter
jamie0921
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1973 CJ5 
 
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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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post #2 of 14 Old 02-16-2012, 01:11 PM
csabens
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check the ground wires behind each headlight bucket

Daily Driven: 1985 CJ7 Renegade, 258ci 4.2L (TeamRushed and Nuttered), T176/Dana 300 (in need of an overhaul), Weber 38 DGES, Ion Alloy 174 15x8, MasterCraft Courser MT 33x12.5x15, Front Axle Dana 30 w/ Superwinch Hubs, Rear Axle AMC 20 w/ one piece Alloy USA.
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post #3 of 14 Old 02-16-2012, 01:48 PM
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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post #4 of 14 Old 02-16-2012, 01:58 PM
teh603
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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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post #5 of 14 Old 02-16-2012, 02:12 PM Thread Starter
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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post #6 of 14 Old 02-16-2012, 02:29 PM Thread Starter
jamie0921
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Could it be the dash mounted switch
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post #7 of 14 Old 02-16-2012, 02:34 PM
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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post #8 of 14 Old 02-16-2012, 02:49 PM
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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post #9 of 14 Old 02-16-2012, 02:58 PM Thread Starter
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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post #10 of 14 Old 02-16-2012, 03:40 PM Thread Starter
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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post #11 of 14 Old 02-16-2012, 05:16 PM Thread Starter
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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post #12 of 14 Old 02-17-2012, 02:45 AM
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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post #13 of 14 Old 02-17-2012, 03:20 AM Thread Starter
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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post #14 of 14 Old 02-17-2012, 03:21 AM Thread Starter
jamie0921
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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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