Hey guys
I'm about finished rebuilding this '06 3500 I've replaced everything from the engine forward, installed a dew eze big bale bed and it looks good. I have an electrical problem that's giving me fits. Let it sit 4 or 5 days and won't turn over, batteries completely drained. Put a digital volt meter on the negative post and negative connector and it reads full drain of whatever the battery strength is at the time. I have pulled every fuse in the TIPM, unhooked my Bullydog and it makes minimal difference, still a huge drain no matter what fuse I pull. Can anyone help me out with this? Is there another fuse or something to check?
Thanks gunnie

 

maybe one more clue to this mystery I changed to a test light hooked to the battery neg and neg connector, unhooked the grid heaters, no change, but when I unhook the main power wire to the TIPM from the battery the test light goes out. What powers through the TIPM that isn't fused on top of the TIPM?

 

Any suggestions from the electrical genius's? This has me stumped.