Well, I cleaned off all of the grounds when I had the engine tore apart, BUT instead of being lazy I went out and recleaned them all. I found one I missed under the battery tray. Unfortanately the problem persists! I feel like this is a ground issue as well, I've had nearly the same problem on a tractor before. How many grounds are there on the frame rail? I've nailed the one on the rear driver's side twice. It holds one white and one black wire. I've even rewrapped the trailer light harness twice. Ugh. I also hit my head on my tail gate sooo I'm twice as frustrated now lol.