Welding question

[rich a]

When it comes to might welding our beloved cars is disconnecting the negative from the battery and unplug the ecu lead from it enough protection. Or should a surge protector b used there seems to b a lot of different opinion about the subject. Mines a gsi so more worried about the ecu cheers folks

[mowgli]

most people disconnect the battery and ecu as a precaution. it only takes seconds on a gsi

[rich a]

Cheers mogli do u mean both battery leads or just negative ?

[Rage]

ive always disconnected the battery and the alternator never worried about any ecu's. the alternator, or the rectifier in the alternator, can be sensitive to surges from welding

[Andy]

disconnecting negative earth terminal is enough.
no need to bollocks about with ecu as theres not a complete circuit for it to travel to.

[rich a]

Cheer guys different opinions all round when my mate welded it he used a surge protector an nothing else

[Benn]

The serge protector will be enough as thats what they are made for. If you dont have one, neg lead off the battrey is fine.