I have a boat trailer and noticed that only the left turn signal / brake light is working. Recently, I pulled another trailer and same thing. No running lights, nothing at all on the right side.

Can anybody tell me how to start to troubleshoot this??

Thanks,
SM

 

I guess I should have said I am pulling with a 2005 f-150

SM

 

are you getting power out of your pigtail connection on the truck?

 

Well, I am not exactly sure. I am assuming I use a volt meter and groung the black and put the red probe on the pins, right?

SM

 

Nevermind - found 2 blown fuses upon further inspection!

THanks,
SM