C8 welding procedure regarding electrical safety

[PeteC8]

Hi again! My 2004 C8 has just failed MOT on a minor bit of corrosion. I have the equipment to sort this, my concern being any possible effects on the electrical systems that run all these modern (by my standards!!) vehicles. Should I just disconnect the battery leads or is there an approved method to adopt to safeguard the electronic system? Sorry if this is more a generic based query, just I am more used to welding principles based on pre 1995 cars!

Many Thanks, Pete

[Jay-Bruce]

Hi Pete, the biggest issue for welding cars is damage to the alternator diodes, which is why we disconnect the battery when welding. As far as I know, removing both terminals from the battery will protect the electrical and electronics systems.