[Kartman55]

I was towing a trailer with my 2000 Tundra SR5, when I got pulled over by an Oregon State Trooper for no tail lights on the trailer. Every time I turn on the running lights, the 15A fuse blows instantly - even with the trailer disconnected, so it's in the truck. I assume there is a short, but a close exam is not showing me anything obvious in the hitch wiring. Next, I will pull the light assemblies at all four corners and look for a short.

Anyone have any tricks for finding a short?

 

[burned300]

The brake light converter could have had an internal meltdown & cause a short,

A good visual check can find bare wires, since this post is a month old, you probably have the truck fixed by now, there are a few different short finders on the market, I have two different styles, I've been tracking, finding & repairing short circuits for over 30 years. I doubt you want to drive to Ohio, If I cannot find the short in 10 minutes, it's free.

 

[st3phani3F]

I have this same issue except wires are continuously burning up and causing shorts in wiring harness from tail lights to fuse panel