Another Electric Fuel pump wiring question.

crackedback said

Having the switch to kill the pump isn't a bad idea as YR mentioned. Engine dies and the pump shuts off in an accident, etc. You could use the same switch to kill both ignition and pump.

My guess they matched the breaker to the rated max current of the relay. An FYI, always match the circuit protect to the expected max load plus some overhead. That way you aren't melting things that only need 5 amps and have a feed capable of 30 amps. That's bad engineering. :)

Click to expand...

The pump is an Airtex E8090, just a 9psi, universal, aftermarket pump. Its not a big race pump or something. But I've been all over the internet and cant find anywhere where it tells you how many amps it draws. Only thing I found is where a tech at Summit told a guy to use at least 14ga wire, and wire it to a 10amp fused circuit.
I've already got 10ga from the pump to the engine bay, and the wire coming out of the relay to the battery is 10ga, and I've got an inline fuse holder with what looks like 12ga wire coming out each side (biggest one I could find). I'll use it, with probably a 10amp fuse to start.