[aussie merc]

ditto on the original ignition switch having trouble with current loads. Set mine up with a couple of high load relays and thats all it runs about 5 amps everything else is run through the relays as for the fuel pump seen them done several ways like oil pressure switch with primer button or the best ive seen is a propane supply relay [powers the pump for 15 seconds when you turn it on then nothing until it gets a signal from the coil that is working [engine running ] as the last thing you want is the fuel pump working flat out when the engine has stalled