[young dank]

Originally Posted by bclmread

I haul a 27' travel trailer with my '05 LE.

Last weekend, someone at the campground we were visting told me the left brake light on my trailer was out. So I replaced the buld, and no change...still out. Its a dual filament bulb...the trailer running light works, but no left brake or left blinker. HMMM...

So we did some testing...we hooked my bro-in-law's 05 Titan up to my trailer...trailer works. We hooked my Titan up to his trailer, and same problem occurrs...no left blinker/left brake. So its the truck...

I run a Prodigy controller...could a loose wire in the Prodigy hookup cause a left side only brake/blinker light problem? I don't think there is anything about blinkers etc in those wires. I'm thinking there might be a problem in the connection from the Titan harness to the Prodigy, since on my way home tonight (from camping), my Prodigy was telling me I had no connection (as if there was no trailer plugged into the 7-pin), yet the running lights, and right blinking/brake lights worked on the travel trailer.

Good thing it was a short ride home...

Any ideas?

sounds like you missing the relay for the right hand lights. look under hood behind battery and see if all the relays are there, if not swap them and see if trailer lights swaps too.