Why Disconnect the Ground ? (Why Not the Positive ? )

On a related note, I have heard that you don't want vehicles to be touching when doing a jump, but don't know why?

Originally Posted by IdahoScrapper

On a related note, I have heard that you don't want vehicles to be touching when doing a jump, but don't know why?

Back when I was taught it was because some cars were positive ground and some negative ground.

Originally Posted by ron22

Back when I was taught it was because some cars were positive ground and some negative ground.

every now and then i still run across one there are some people out there that have their antique all original and still a positive ground system. we had a 53 ford F3 in the shop a few weeks ago the kid working on it was having a hell of a time, couldnt get his test light to work right or anything lol but then again same kid i had to go show how to operate a standard colum shift in an old Chevy II