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I've got a 98 TJ that I need to do some welding on this weekend. I have arc and mig available. Do I need to take any precautions to avoid damaging electrical components? ie winch, alternator, dual optimas, stereo system, amps
 

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9V said:
you are ALWAYS supposed to disconnect the battery(s) when welding on a vehicle

Go to any bodyshop and ask them if they do.......nope....its a myth....or maybe we have just been very, very lucky.

Put the ground clamp as close to the area where you are welding....

Probly not a BAD idea to disco the battery, but i think its uneccessary
 

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Go to any bodyshop and ask them if they do.......nope....its a myth....or maybe we have just been very, very lucky.
What shop do you go to??? If I smoked an electrical system welding on a vehicle at the collision shop I work at, I would get my ass chewed. Not to mention if the shop manager wandered by and saw me welding without the battery disconnected. I ALWAYS disconnect the battery, just for good measure. Can you weld with it still hooked up, yes, I know many who do, but why take the risk for 30 seconds worth of work???
 

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Hell, you are suposed to use a staic discharge braklet when working on the cars ECM to avoid fryin' it with a static spark.
So YES you should allways disconnect the batt. Neg when welding.

As I tell my students...
You can weld on 100 cars and be fine then fry the elec. on 101.
101 WILL be a Benz or similar $$$$$$ car. (murphy don't ya know)
It's unlikely that you will fry the car, but, it is also unlikely that you will win the lottery and people buy tickets every day:D

But, if it is your car...... Weld away if you want.

Parts stores have a surge protecter that you can buy for about $40 that you can clamp to the batt instead of disconnecting it.

Cory
 
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