[davids2toys]

MSD tech dept also recommends running the POS and NEG wires directly to the battery. Mine is not, but I may do it. It always scared me running before the battery shutoff because there is no way to cut the power to the MSD box in an emergency. Also jump starting or charging had me worried too. I suppose any welding would also be an issue. They said nothing could happen to the box unless the ign was on and juice was going to the small red wire. I guess i wasn't sold!
They also recommend running a ground jumper wire from the grounded head to the un-grounded head, I am going to do that for sure. I may even run another jumper to the block because of the aluminum heads.