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Is disconnecting the earth cable at the battery adequate protection for an EEC-III computer, while welding on the truck - or does the computer itself need disconnecting somewhere?
i have always taken the neg. off the battery just in case. even if its ok to weld on it i would still take it off but it all depends on were the ground clamp is on the car/truck
Pop the ground cable off the battery, it's easy and eliminates the possibility of damaging the whole electrical system which includes the computer, cheap insurance just in case.
I was told the best and safest way is to pull both pos and neg lines and attach them together so the whole electrical system is at ground. That keeps any inductive action from taking place.