Originally Posted by
cjwood555
Tabetha that's cojones.
Voltage drop / series resistance is going to be MUCH greater down any size cable compared to a great chunk of steel. So long as care is taken to get good contact with bare metal over a large enough area (i.e. same size as terminals on pump), and protect it, then your point is moot.
I would be more worried about protecting another large diameter cable for the length of the car to be honest!
You'd actually be worried about "protecting" a earth wire, is this in case it touches the body somewhere!!
The slight amount of resistance will not make any difference to the pump but a bad connection due to rust etc can.
The body will still show a resistance, especially as at the ends of thebodt there is a terminal where the wire is connected to it.
tabetha