I'm a bit confused here.(what's new?) I have been NHRA racing for years and have always put the exterior kill switch to the negitive side straight off the battery. On my cobra, the battery(s) are in the trunk and I have two switches that need both closed to make the car go. One is on the bulkhead between the seats and the other is below the trunk, middle and outside. Either switch will kill the engine because the MSD box is wired to the negitive via the switches.
Under no circumstance can I think of why I would wire the kill switches to the positive side. My logic is simple.
In a bad wreak, as I have seen ,(and expierenced) the postitive wires everywhere will still make ground and cause shorts. I.E.- fires. If you totally remove ground nothing works and nothing can short. I also have a tipover kill switch that will kill everything if the car gets 90 degrees or bottom side up. Again wired to the negitive side.
Anyone for the positive side argument? I may be missing something here. I have been wrong before on this stuff.
cobrashoch