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

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

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

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

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    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.
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    Quote Originally Posted by The Noof View Post
    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.

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

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    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.

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

    Quote Originally Posted by jets View Post
    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.

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