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Old 10-10-2015, 08:44 AM   #1
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No brake or tail lights

I've got a 2003 Allegro Bus that the brake and tail lights quit working. I have checked the fuses and bulbs and all are good. Also called Tiffin and Freightliner, but not much help. Does anyone know if there are any inline fuses somewhere I need to check. Normally when both the turn and brake lights quit working it is a fuse so that is where I have focused my attention. I also noticed that the Hazard Flasher make the lights flash real fast. I have tried to find the flasher, but cant seem to locate one. Has anyone had this problem who might be able to point me in the right direction to fix? Thanks, Jack

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Old 10-10-2015, 09:42 AM   #2
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I don't know your coach, but I can pass along a couple of links that pertain to fuse and relay locations on your model.



RV.Net Open Roads Forum: Class A Motorhomes: Alegro bus Turn signal

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Old 10-10-2015, 02:07 PM   #3
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Checked those sites and info is pretty much what I thought the flashers should be. Just haven't been able to find them though. More wires than Carter has Pills. Will look a little more..
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Old 10-10-2015, 03:37 PM   #4
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I had the same sort of problem with my 5th wheel. It was a module under the dash of my truck.
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Old 10-11-2015, 07:17 AM   #5
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Check with the Tiffin RV Network site. It really depends which chassis your buss was built on as to the exact location. Taillight fuses are normally located on the passenger side in a rear compartment.
Roger & Mary
2014 Tiffin Phaeton 36GH
2012 Honda Fit toad
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Old 10-11-2015, 07:26 AM   #6
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Do the backup lights work? If not I would say it is a ground issue for sure.
You need a volt meter or a test light. Check for power from the bulb contacts to a known good ground.
Tracing these harness problems can be painful but I would look for a wire connector partially disconnected or a harness which has been pinched and broken.
The tail and stop / turn lights should be on entirely different circuits. A blown fuse is possible but in your case not likely unless the rear harness is shorted to ground.
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
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Old 10-11-2015, 07:42 AM   #7
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I wouldn't troubleshoot the flasher. The bulbs will flash quickly when there's an element burned out in one of the four bulbs (front or rear). This may also be the source of the original problem. I would not suspect fuses at this point.
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Old 10-11-2015, 09:28 AM   #8
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Found the flashers. They are located under the panel on top of dash above the steering wheel. The flashers were square, red, and plastic. I replaced them and now the turn signal and haz. flashers work properly. The flashers were Purchased from Auto Zone for $12.00 apiece. For those of you that have the 2003 Allegro Bus and need to locate the fuses, they are located in the center console. You have to remove the two drawers and you will see the fuse panels way in the back. I want to thank all those who helped with info.
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Old 09-14-2016, 06:55 AM   #9
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I have a problem with my brake, turn signal, tail and running lights on my 2003 Ford F53 chasis. The brake, tail and running lights do not light with no blown fuses. The turn signals work until I depress the brake pedal, then they go out The backup camera comes on when I depress the break pedal or use the turn signal, it flashes in sync with the flasher. I have idled the motorhome for 30 minutes twice, I quit when the owners manual said not to do it for more than 10 minutes with no reason why. As all the wires for the back of the home run up the driver side frame and the exhaust come out in front of the rear wheel and the engine manifold is close to the frame, it would not surprise me that the engineers ran unprotected wires next to hot areas. Looking at the schematics that the previous owner provided and at the physical wiring it looks like the camera gets power from the TR wire to turn on. The TR wire is the power for the backup lights. So I am thinking that the harness got melted and shorted the wires for the brake, tail, backup and camera feed together without grounding them, hence no blown fuse. So I am thinking that the reason of not idling more than ten minutes is to prevent melting and shorting the wire in the wire run. I do not have a schematic for the ford chassis and am working currently off of a Winnebago schematic. Without the ford schematic I do know if there is a "body controller" that could be the problem or the wires are melted together. I am looking for anyone else that has had an issue like this and what they did to fix the problem.

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brake, light, lights

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