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General Category => Tech - Help Area => Body-Interior-Electrical => Topic started by: Hagemann on May 29, 2010, 01:30:47 PM

Title: Welding on the vehicle
Post by: Hagemann on May 29, 2010, 01:30:47 PM
Just thought I'd throw out some tips on welding on your vehicle. Been a welder for many years and often asked to do repairs on the vehicle. The number one myth is disconnect your battery before welding. Ok, not a bad idea, but this still won't prevent your electronics from damage. Its all about the grounds on a vehicle. Welding doesn't use high voltage, but it does use high amperage. If your welding on the frame, your welding ground lead needs to be on the frame. If your welding on the body panel ground to that body panel. There is no way you can ground to the frame and then weld on the body without causing damage. The damage is every one of those little ground wires that go from the engine to the frame or frame to the body becomes a welding lead. Unless they were the size of a battery cable, its going to burn up, this includes the grounds inside your computer, so disconnecting your battery will not help.
Title: Re: Welding on the vehicle
Post by: ED-NY on May 29, 2010, 02:33:27 PM
Great info..thanks for clearing that up, really wasn't sure.

Knock on wood..I must have been doing something right over the years.

Ed
Title: Re: Welding on the vehicle
Post by: merlin5577 on May 30, 2010, 12:00:40 PM
Great info! Thanks for sharing!