blown fuse

Did you have the lights on when you replaced them. Did you replace the bulb or whole assembly?

Did you check the fuses inside the truck? Marker lights are the same as parking/tail lights in the truck

The fuse is going to be in the truck.

Says he has voltage at the plug on the vehicle, I thinking he replaced the assemblies and pulled a wire loose.

Hornnumb2 wrote:
Says he has voltage at the plug on the vehicle, I thinking he replaced the assemblies and pulled a wire loose.

X2

Ok, I recheck my connections they all look good. I have my turn signals and brake lights on the camper. All the lights work on my truck. I'm only missing the night time running lights on the camper which includes the upper amber lights that run around the top of the camper and the rear lights that should be on all the time when my truck lights are on. other than that all the other lights seem to be working fine. I used a dc voltmeter and I have voltage at the plug to the truck.

Anyone know if they are wired in series and possibly one of the bulbs is out causing all of them to be out. I have a white and green wires going to each unit. I put the old units back just incase that might be an issue.

Thanks for all the response every little bit helps and beats taking to the shop for electrical repairs($$)!!

I'll assume by power at plug-specifically the running light circut? Fuse for trailer running lights are in the engine bay #4-#8. I could see one string not working, but all of them, even the tail lights? No they wouldnt be wired in series. Do you have back up lights?

I'm thinking they are daisy chained, The first one in the string may not be connected,power or ground. Since you replaced the fixtures,do you remember one fixture having more than two wires supplying it? Check the trailer end of the plug at a junction box somewhere near the hitch, for a loose or burned connection. My guess anyway...

Moved from DIY

Could a ground have been disturbed? Might be worth running a long wire from battery negative to the ground side of one of the lights to see if it lights up.