As he title says, I will be doing some stitch welding to my car. when welding up front will this mess up the ground on the battery/motor and fry something or does it matter? I will probably disconnect it anyway but need to know anyways.

 

some say yes some say no...ive never done it and never had probs, but it takes a whole 30 seconds...do it just to be safe
kyle

 

Yes take it off, the battery, nor the electronics like it very much, when you have shitload of volts running through the negative side of the circuit.

 

I've never fried anything by welding to the chasis without disconnecting anything. I don't know if I've just been lucky, or if it's hard to fry stuff when you have a decent place to ground the welder. Lately though I've been disconnecting all grounds near where I'm working, as well as disconnecting the ecu. Figure it can't hurt

 

i've never disconnected the battery for welding exhausts or anything like that.

never really done much other welding on different cars than exhaust work

 

It takes 30seconds to disconnect the battery, whats the problem in having some added security?

 

there was a thread last week where a guys ecu got fried because of not disconnecting the terminal.