JoeandJane
Well-known member
New to me '03 Tiffin Allegra bus, there are four lights each side of back. Yellow top, two reds, and white. When I brake, the yellow and top red come on. The bottom red only works as a running light even tho it is a dual filament bulb. I would think the two red would come on and not the yellow at all. What do you think?