[Pecal]

Bob,

I have kept the switched earths separate from the loads. I also added a direct line to the negative for the switched earths.
One interesting bug that confused me for a while was the headlight switch. Being an old Ford Laser unit it had enough resistance through its gummed up contacts to not trigger the mastercell. I could measure the switch with a meter and there was no problem but the very low current of the ISIS couldn't overcome the glug. Pulled the switch apart and washed the contacts and all was good.

Peter