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Dash lights, and cab lights, not working

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Old Jul 24, 2008 | 11:21 PM
  #1  
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From: Berthoud, CO
Dash lights, and cab lights, not working

Guys,

I dont have any instrument lights, nor do I have any cab marker lights, nor any running lights. I've looked all over the fuse box for a blown fuse, but cant find one. Am I missing something? Are all these lights on the same circuit? I can get the overhead light to come on with the dimmer switch, all the headlights, blinkers etc work. Any ideas?
 
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Old Jul 24, 2008 | 11:30 PM
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I ran into this on a service truck a couple of months ago..
could be a bad headlamp switch..
and there was one other thing that may have caused it and for the life of me I can't remember what it is...
 
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Old Jul 25, 2008 | 02:58 AM
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From: Berthoud, CO
headlight switch seems to be at least turning on the headlights, etc. Bright lights work also.
 
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Old Jul 25, 2008 | 05:10 PM
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anybody else have any guesses to this problem? Flashers dont seem to be working either I discovered.
 
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Old Jul 25, 2008 | 08:06 PM
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Start by checking your grounds. Take a look at your head light switch. Alot of what your having problems with runs through that switch.
 
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Old Jul 26, 2008 | 06:53 AM
  #6  
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I had to replace my headlight switch a few years ago. Don't remember what my problem was, LOL, but whatever it was the switch fixed it.
 
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Old Jul 26, 2008 | 08:52 AM
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I also do not have any brake lights, or rear lights. Blinkers work, but the tail lights are out also. Is that the headlight switch too?
 
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Old Jul 26, 2008 | 10:01 AM
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The brake lights run through the brake switch on the floor by the brake pedal. Almost all others run through the headlight switch. Like I said before check your grounds, battery ,frame, and any and all jumpers. A loose, broken, or corroded ground can cause havoc with the lighting system. If this is'nt it let us know and we will dig deeper for you!!
 
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Old Jul 26, 2008 | 11:00 AM
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From: Berthoud, CO
Thanks all of you for the help. I found the problem. There were two fuses that had burnt out, but not where you could see them by visually looking. I finally ended up ohming out all the fuses and found them that way. I have never had fuses blow, and not be able to look at them and see that. Kinda feel like I have a little egg on my face, ugh. Thanks guys.
 
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Old Jul 26, 2008 | 11:04 AM
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Glad you got'r figured out. You just need to see why they blew in the first place.
 
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Old Jul 26, 2008 | 11:08 AM
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From what I can tell, I think the trailer plug is causing this. Im going to tear that all apart and see. Maybe water got in there, corrosion, etc. Thanks again.
 
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