Earth/Positive switched Relays ??

[melhookv12]

Just looking at re-wiring my race car and was wondering which option is best. I'm sure when I worked at Jaguar they used some earth switched circuits.

Opinions and options. Pluses and minuses Please !!

I don't have much to power.

Electric Fans
Electric water Pump
Gauges
2x Fuel pumps
ECU and MSD ignition
ECU relates relays ( x3 )
2 lambda sensors

Thanks for reading.

[melhookv12]

Thanks for your reply.