seattlejester Posted January 23, 2015 Share Posted January 23, 2015 Slightly off topic, but still applicable. A friend asked me to weld a little bracket back onto his car. Doesn't seem very hard, probably will take a couple minutes, I've welded on my car before easy. But then I realized his car has a PCM, ABS module, In dash navigation etc etc. I'll just be migging, so I'm not worried about high frequency start problems, but should I be worried? Plan is... Take off ground cable of battery Take out the PCM/ECU Ground to the bracket/workpiece Then weld it onto the car Should I be worried about the other computers in the car? Am I being overtly paranoid? Quote Link to comment Share on other sites More sharing options...
johnc Posted January 24, 2015 Share Posted January 24, 2015 I've never had an issue with a properly wired car. DIsconnect the battery negative ground. Quote Link to comment Share on other sites More sharing options...
seattlejester Posted January 26, 2015 Author Share Posted January 26, 2015 Excellent. Thanks! Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted January 28, 2015 Share Posted January 28, 2015 I disconnect the battery ground cable and I unplug the harness from the ECU. It is pretty easy to do and just makes me feel better, for what that is worth-feelings vs actual knowledge. Quote Link to comment Share on other sites More sharing options...
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