In this video, I show how a fuel pump relay works and how to bypass yours. I also show how to rewire your fuel pump for an upgraded fuel system or race car. Aftermarket 5 pin bosch style fuel pump relays can easily be wired into any car and made to work with nearly any electric fuel pump scenario you can come up with. This info could apply to any Bosch 044 style pump, AEM external pumps, or even a Walbro 255 fuel pump.

Pin 30 - Incoming 12v to relay from battery
Pin 87 - Outgoing from relay to electric fuel pump power.
Pin 85 - Ground
Pin 86 - Trigger wire to turn on the fuel pump relay. Can be connected to a toggle switch, the ignition switch, or connected to the factory fuel pump relay wiring.

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