Lights on '03 Alegro Bus Instrument Cluster

I have the same year MH.
There is a separate dimmer switch for the instrument lights. The headlight switch turns like a normal dimmer, but seems to do nothing. The separate "dimmer" switch controls the intensity of the lights on the gauges.

I'm guessing that you knew that their are two separate turning knobs, but just in case.

TRVN is a great resource and, like 67Cutlass, I use it daily as well. I'll almost bet your problem is a burned out light bulb or bulbs but you might have to pull the panel to find it.

Another good resource for you is the Tiffin Service Department. Give them a call. Just because your coach is 10+ years old doesn't mean they won't talk to you and try and help you solve the problem.

We have a Tiffin Phaeton and I use the TiffinRVNetwork Forum almost daily. I have found the forum to be VERY helpful and respond quickly to your Tiffin questions. There are about 1200 active members on that forum. This forum is not associated with the Tiffin Motorhome company.

No offense to anyone here, but the TiffinRVNetwork Forum members really know and understand all Tiffin products.

So my suggestion is to post this question on that forum. You will be surprised how quickly you will get suggestions and answers that you need.

Yep. Check the dimmer. Might be hard to find.

I'm not sure what TMH did that year, but I had an 03 Winnebago/FL that had a separate dimmer switch for the instruments. The dimmer on the headlamp switch controlled the drivers map light.