[Excaliber]

Of course if everything goes 'just right' there is no problem, the current (amps) are very small, it's when you 'slip' that things get interesting. Heck, a couple of times I even jumped across from the main battery terminal to the main starter terminal because the solenoid was bad. Now I gaurentee that will result in fire works, but it will turn the motor over as well (use a BIG jumper).