Ok guys, I have a dilema. I am a GI in the middle of a move and someone pointed out that I have a trailer light problem.

When the trailer is plugged in the left parking light stays on with the truck off.

When the right blinker is activated both trailer lights blink, truck lights work good.

When the left blinker is activated the blinker on the trailer works as normal.

I hooked a different truck up and all the trailer lights work fine, just not with my truck.

All fuzes under the hood and in the drivers kick panel look good. Dont know what is up. Pulled the 6 pin and reseated it from the hitch and it all looked good.

Dunno. Need help ASAP. Still have another 2300 miles to go.

You need a replacement "Flasher Module"............

This guy has your problem http://www.dieselplace.com/forum/showthread.php?t=348212&highlight=flasher

And here are instructions........... http://www.dieselplace.com/forum/showthread.php?t=365771&highlight=flasher

That is what I was thinking, I tore down to the module last night and pulled it. One relay was half stuck. So I cleaned it up a bit, will probably fail again soon. I will replace it when I get of the road at my new duty station

Thanks for the affermation of what I was thinking was correct.