Originally Posted by GARETH T
Originally Posted by SECS
He is talking sh*t.
More likely to have blown a fuse as said above or another earth wire
elsewhere on the car.
As an aside, I dont think most patrol men are "clued up".
I used to work for a company that supplied RAC with diagnostics testers.
They had a RED and BLACK wires for connection to the vehicle battery
and labels on the coloured wires saying positive/negative.,
Nearly had 50% of them returned for damage caused by connecting them
up backwards.
Thick cnuts

why didnt you fit a brdge rectifyer on the supply circuit then

cause he would have lost 80% of his work and also had more waranty claims rather than proof of bad workmanship i guess