How to wire a fuel pump relay.

Most aftermarket fuel pumps require more power then stock wiring configurations can handle. For this reason we recommend using a relay to power aftermarket fuel pumps larger then 255LPH.

You do not want to use a relay that cannot handle the amperage your fuel pump will pull as this can damage the relay and make it fail. We recommend using 14 gauge wiring.

Wiring A Relay

The relay should have 4 or 5 pins on it. They are usually labeled 30, 85, 86, and 87.

Wiring Steps:

1. Wire pin 86 of the relay to a 12v trigger.

2. Wire pin 85 to a good ground on the car.

3. Run a dedicated power wire from your battery to pin 30

4. Run a wire from pin 87 to the positive wire on your fuel pump