How to use a mig weld for a car with lots of electronics

[Russ]

Can I use a mig welder for new cars without disconnecting a battery

[lobsterpot]

I have wed on newer cars and haven't had a problem yet.

[satchick]

From my understanding you disconnect the battery to prevent damage to the voltage regulator circuits in the alternator. There is a risk of damaging other modules too.

Why not disconnect the battery? Just write down the radio code and presets... If you have memory seats/mirrors, I don't know if the settings will survive a battery disconnect, but I guess that depends on the car.

[lobsterpot]

Yes, but have you WELDED on them...lol
Why would you take the chance???

Yes I have welded on them ,sorry for the mis-spelled words. I do exhaust work on just about anything. you have to weld some of the connections together to get a good job.

[iq180]

i would like to add one thing to this, keep your ground clamp as close to the weld as you can, that will help.

[jets]

Just disconnect the battery, why would you not spent 30 second to do that. I would never weld on any vehicle without disconnecting the negative battery post. It's a rule of thumb...

And what iq180 says above.

[satnaza]

I agree..it is better to be safe than sorry !!!!!

Just disconnect the battery, why would you not spent 30 second to do that. I would never weld on any vehicle without disconnecting the negative battery post. It's a rule of thumb...

And what iq180 says above.