"Larry Jaqes" wrote in message
...
On Fri, 03 Jan 2014 12:15:41 -0500, wrote:


Remove the battery and turn on the headlights (high beam preferred)
and TIG away - no problem with the electronics.

2 questions: What do the headlights do, absorb the HF?
and What about vehicles like my Tundra, which has relays,
effectively
negating any benefit?

The manager at the dealer's body shop said to disconnect the battery
ground cable and use MIG.

I'd rather risk having to reweld or Bondo the fender than replace the
electronics. An amateurish fender patch doesn't immobilize the car. I
had more than enough trouble chasing down an intermittent electrical
fault in my truck.

High frequency doesn't follow DC grounding rules, especially as the
wavelength approaches the conductor length.
jsw