Fuse #8 parasitic drain
What could be staying on, enough to kill the batteries overnight thats tied into fuse #8? The dome lights etc are NOT on, nothing is on but I hear a relay or something clicking up under the dash....both when I have my wife touch/disconnect the battery cable with the doors shut and also when I pull the fuse with the door shut.
I dont think its the radio. It also seems to do it randomly. Some nights it drains the batts and some nights it doesn't do anything. Right now I yank the fuse when I get home and it seems to have stopped it temporarily.
96 powerstroke. 5 speed.