Originally Posted by johnerotten
Hope I can find someone that has come across this problem cause it's a stumper.I have a new to me bounder 34h on a freight liner chassis and when i drove it for the first time at night I found out I had no dash lights.I located the right fuse panel and low and behold no fuse,easy fix i thought,install new fuse and instrument lights turned on and stays on all the time.Now i know why the fuse was missing.First thought was the headlight switch but even disconnected they are still are on.Then I thought it may be back feeding through the radio or the switches to the left of the drivers seat,disconnected all of them and still on.So now I turn to all you wise and knowledgeable people,where should I look next.Thanks in advance
Well Sir, I'm no electrical engineer but, to me, maybe right off the bat I'd suspect the dash light switch that controls either the parking lights or, the dash lights themselves. Sometimes it's a roller or, thumb wheel type switch that controls them and, due to that type of a design, it also allows for dimming and brightening them.
So, I'm assuming you're tried all the potential switching that could have anything to do with those lights, correct? Then I'd go after the actual switch that controls those and dims them. It maybe sounds as if it's stuck in the on position. Just for grins, replace that fuse and see what happens if you use the dimmer for them.