Originally Posted by
Stu @ M Developments
The YB fuse box really is massively overloaded on some cars.
I was surprised when I re-wired my car to find the the fuse box was fed by a single 6mm^2 wire, nominally rated at about 50 amps.
When you consider that this feeds the heated rear screen, heater motor, all lights, radiator fans, wiper motor, engine ECU and fuel pump, etc, etc, I was surprised the car didn't catch fire!
Suffice it to say that I've re-wired the fuse box with more suitable cables - a 8.5mm^2
and a 10mm^2, and taken the rad fan feed and fuel pump feed out from the fuse box.