Tail lights shorted out

Look for a short in the wire going to the tail lights. The wire under the bed that goes to the tail lights might be damaged. The dash and tail lights are on the same fuse.

Is it under the bed , like by the spare tire . a black and red wire ?

How can u tell if the wire is the cause

Is it close to the wire plug in under the bed of the truck close to the tail lights. I'm not sure how to tell if which wire would be the shorted wire. Any suggestions on how to figure that out

Had same problem with my Cummins not to long ago look along bed rails for any flat or chafed wire that was problem in my case

Ok thanks. Did u just splice and repair ?

Ok so I unplugged the tail lights by my spare tire and the fuse is not blowing anymore . can u tell me my next step . do I need to disassemble the tail lights ? What am I looking for?

There's other plugs further to the rear. Isolate right and left tail lights, ur narrowing it down. Disconnect all plugs and check for short by doing a resistance check or if u don't have a meter and can spare a couple more fuses, Disconnect let tail light and see if fuse still blows and do each one till u find out which side it is and keep going til find it

Remove, fuse, re-connect the plug u removed earlier and then perform the above step otherwise ur gonna waste the fuse righaway

Check your cigarette lighter & it's socket ( plug ). I had the same problem. The lighter was shorted. They are on the same fuse.