Fuel pump wiring question...

I just wired mine off of my nitrous arming switch, fed thru a 10 amp fuse. When I turn the switch on it energizes my nitrous control circuit and turns the fuel pump on.

I'm not sure what the load rating is on those switches/breakers but I run the same setup and always use relays

The nitrous arm switch is 30 amps. My solenoids run off of a relay and are fed off of a different circuit.

i agree with slimbo the relay will reduce the initial pull on the system and provide extra security

+3. I highly recommend using a relay. I also suggest doing as others said, and connect relay to the nitrous master power switch. This will ensure that you have the fuel pump running when nitrous is engaged. If you wire it to a separate switch, you could possibly forget to turn on the supplemental pump, causing major damage to the engine when the nitrous is released. JMHO.

I just got done with about 90 percent of the wiring in my race car. I have a black panel where the radio used to be with two cheap switches in it and a couple of l.e.d.s to let me know when something's on. I also went with the switches with the flip up red covers to make sure nothing's on by accident. The left switch sends power to one side of a relay that has the other side of the coil straight to ground, that relay will power a Holley blue for the nitrous only. It also has another hot wire to one side of another relay that will have the ground for the coil switched with the wot on the carb. That way there's no way to forget to turn the fuel pump on with the juice. The other switch in the panel makes and breaks a relay in the trunk for a bottle heater. It'll have a fused feed off the backside of the main disconnect switch. Most of the rest of the car will run off of an ARC eight circuit relay board and touch panel. I didn't like a long run of wire for the BG 400 in the trunk so the relay board makes another relay in the trunk that'll have a 12 ga. fused feed off the back of the master switch also. It all seems overkill but I hope to not have wireing problems doing it that way.