The switch turns on all my other aftermarket lights, only thing won't turn on is cab lights. Ill take some pictures, ill be at the truck in about an hour.
W900 Top of cab marker lights
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by nikmirbre, Jan 5, 2021.
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Ok here are my thoughts. In the picture above, the one on the far right I pulled the wire out of the hole but it came unplugged so I had to dig it out of there hence the damage. However I may have inadvertently also pulled out another plug. In the picture the light is plugged in but there is also another plug I dug out so it makes me think I need to access the wiring from the inside of the truck to plug it back in....
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The cab lights each need a good ground to work. The plastic ones are difficult to get good ground. Worst case you may have to run an extra wire from lights down to a good ground point somewhere else.
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I’m guessing I need to access that wiring from here.... I don’t think the harness that the light was plugged into is supposed to come out. It doesn’t fit through the hole without tearing up the fiberglass
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Yep. Messing with things above the headliner is a pain. It tears easy if not careful.
I’m not sure what side they ran the wiring and air lines up through on the newer ones. The vintage kw’s and pete’s were usually up the left side A-pillar next to windshield. Some rarities were down the back wall behind driver seat. White/ Autocar/Westernstar ran right up the middle post between the windshields. -
Ok I found the other harness that was unplugged. I dropped the tray for my CB and it was right there to the left just within my reach. I tried changing it with the other harnesses and it still wouldn't work..... I got a guy coming out in the morning, after roughly 3 hours today im just tired of messing with it. Im wondering if when I took one of those lights off I should've covered up the wiring knowing I wasn't gonna mess with it for a few weeks.
Also yes there is a fuse in the cab marker light fuse spot. Its a metal relay one..... I should've tried to change that. -
what had happened was......
Well when I took one off a few weeks ago and left the wires there, they were touching so when I went to turn on the lights to check them, it was shorting out and none of the lights(just the top of cab) were working. I figured it was something simple!!!!062 and SmallPackage Thank this.
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