Quote:

The common ground is what I was thinking. As long as I don't cross the other terminal with anything else on the car I should be good.

I'm out of 9 volt batteries. I was looking for one on to use in my multimeter this weekend. Gotta get more.



Yea. I'd hate to read a thread about you trying to charge a standard 9v battery with your 12v car battery... or worse- your alternator. That would probably end ugly.