I can't find a current rating on my cheapie isolator switch and wonder if it will take starter motor current without frying itself.
Ideally I want to isolate everything except my electric water pump which can run a little longer to avoid heat soak after the engine is switched off.

[Edited on 5-5-06 by RazMan]

It is designed to go in the main battery lead so it is designed to isolate everything.

I opted for the diode/resistor version which protects your alternator if you switch it off with the engine running. It also cuts the engine as the cheapy one will allow the alternator to supply the engine with power.

[Edited on 5/5/2006 by nitram38]

Okey dokey, so I will run a 10mm lead from the +ve battery terminal to the isolator and everything else connects to the other switch terminal.

Remember that it will not shut your engine down or protect your alternator if you switch off with the engine running.
It would not pass scrutineering if you wanted to race it either.

This is only a road car so no problem