I have a 06 6.0 and as of yesterday my 7 blade trailer plug is shot. Ive had issues with the cluster flickering and i can hear it arc sometimes back in the panel. But my main focus is being able to tow. The only wire on my 7 blade thats showing a reading on my tester is TM. I figure id have to replace the whole harness but my issue is nobody (auto parts stores) can pull up a part for it. I was wondering if someone has had the same issue and can point me in the right direction.