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Old 03-22-2019, 08:37 PM   #1
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Fuse panel

Can anyone help me with location for dash panel light fuse? I am new to the group and have a 2001 Thomas 3800 t444e.
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Old 03-23-2019, 08:36 AM   #2
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Find every place there are fuses and pull each one, one at a time, to see if blown.

Manuals and labels are nice, but that is the only method that has been foolproof for me for real head scratchers.
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Old 03-25-2019, 06:27 AM   #3
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Find every place there are fuses and pull each one, one at a time, to see if blown.

Manuals and labels are nice, but that is the only method that has been foolproof for me for real head scratchers.
Thanks guess itís learn as you go
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Old 03-25-2019, 06:34 AM   #4
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Thanks guess itís learn as you go
It really is.
I hate electricity, but I've learned how to do the most basic of stuff. I still suck at it and always ask a lot of questions but I'm way ahead of where I was a few years ago.
There's so much crappiness with bus wiring you kinda have to get a bit familiar with it.
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Old 03-25-2019, 09:21 AM   #5
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Thanks guess itís learn as you go

Very much so. Also, don't go cutting away a bunch of wires willy-nilly! Dozens of threads here about people doing so and wondering why their bus won't start.
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Old 03-25-2019, 09:54 AM   #6
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I've been diagnosing vehicle electric gremlins for over 50 years. It used to be really easy back when there were only a few circuits and every manufacturer pretty much did the wiring similar to each other. Older British care were really easy, only two fuses. You could put a third fuse between the first two and start and drive the car away, no steering lock.
Now, there are possibly hundreds of circuits.I won't address computer wiring here. Most school buses complicate the problem because there are two manufacturers involved. The people who built the "truck/chassis" and the people who added the "bus" to it. Even my Bluebird AARE, entirely built by Bluebird, has two wiring diagrams, one for the chassis and one for the body.
In the case of most "dognose" and shuttle type buses, if you can't get the wiring diagram from the manufacturer that built the "bus" part, the wiring for things like lights, dash, radio, would be similar to the equivalent "truck" wiring.
In later, can't really say when, chassis. The manufacturer, International, Freightliner, Ford, GM, etc, have provided a plug where the "bus" manufacturer could simply plug their part(school bus things) into the chassis.
A wiring diagram is an invaluable tool and, depending on who drew it, are easy to read. Bluebird was unresponsive to my requests but, a call to the local dealer got me the wiring diagrams. Your results may vary. Note, you want a wiring diagram not a schematic. A wiring diagram shows how it is wired, a schematic shows how it works electrically with no indication of how the wires are hooked up in the real world.
To the OP, if your dash looks like it came from a van or truck and EVERYTHING else works, the problem is more likely in the rheostat that controls the dimming of the dash lights. It would be really rare to have the dash lights on a fuse to them self.
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Old 03-25-2019, 11:35 AM   #7
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They should turn on with your main headlight switch no? Most vehicles do.
Start checking voltage there, you might find there are two feeds to that switch. Or rheostat part is burnt out.



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Old 03-25-2019, 08:53 PM   #8
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Thank you all you have been a big help
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