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Old 07-21-2018, 01:29 AM   #1
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Just lost panel lights

I just lost all instrument panel lights and switch lights - poof! (The interior lights that come on when you turn on your parking lights at night.)

Does this sound like a fuse? If so, look for "panel" or something else? And would this be in the driver's elbow fuses or the stairwell/firewall set?

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Old 07-21-2018, 06:21 AM   #2
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Do you have a pull out type headlight switch? Try turning it because it's also a dimmer switch.
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Old 07-21-2018, 08:23 AM   #3
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Do you have a pull out type headlight switch? Try turning it because it's also a dimmer switch.
No, it's a three-position rocker (off, running lights, headlights+runninglights).

I had the running lights on, then hit the 'increase idle' rocker, and all of the panel lights went out.
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Old 07-21-2018, 09:47 AM   #4
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Very hard to pinpoint your problem without removing the switch or gaining access to see what is going on. Could be condensation that tripped it or bad grounds.

Check connections for power with a meter



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Old 07-21-2018, 10:33 AM   #5
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For many years the tail lamps and instrument panel lights were on the same fuse--sort of a heads up for safety if your tail lights were out at night. One more thing to check out. Jack
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Old 07-21-2018, 09:34 PM   #6
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For many years the tail lamps and instrument panel lights were on the same fuse--sort of a heads up for safety if your tail lights were out at night. One more thing to check out. Jack
Tail lights are fine; instrument illumination is out. Can't find a conveniently-labeled fuse, though I did find a "panel lamp relay". Will put a meter on that tomorrow.
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Old 08-03-2018, 03:05 PM   #7
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Quote:
Originally Posted by Dapplecreek View Post
I just lost all instrument panel lights and switch lights - poof! (The interior lights that come on when you turn on your parking lights at night.)

Does this sound like a fuse? If so, look for "panel" or something else? And would this be in the driver's elbow fuses or the stairwell/firewall set?

2002 Thomas/Freightliner
One switch light usually local to the switch all lights indicates fuse relay or switch failure. Also dimmers have a nasty habit of failing even the ones in the pull types.
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Old 08-03-2018, 04:26 PM   #8
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One switch light usually local to the switch all lights indicates fuse relay or switch failure. Also dimmers have a nasty habit of failing even the ones in the pull types.
We found a "Panel lights" relay in a second fuse box under the dash. We swapped it with its brother and got the lights back. Thanks!
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