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My big concern is that if they're still on the vehicle and the person doing the welding uses an arc welder, it could potentially toast the electronics.


Keep in mind here that the welding current runs between the positive and negative leads, the path of least resistance and all that. I generally keep the ground very close to the actual work, makes a better weld and should prevent any current running through out the truck.
Chris

A brand spankin new 1973 series 3 Landy
OLIVE DRAB SWB, TURBO, IN ABOUT 36 PIECES
89 TROOPER, RESCUED FROM THE YARDS. (Down again)
05 TACOMA CREW SHORTY.