What kind of wiring do you need for a fuel pump?
At the wiring you need to find the 12v supply wire from the ECU to the fuel pump. Once that wire has been found cut that wire so that you now have half of that wiring running to the fuel pump, and the other half running to the factory ECU. Choosing a Relay The relayyou need should be a four-prong relay with at least 14-gauge wiring.
How does the wiring of the fuel pump affect the car?
The factory wiring of the fuel pump is tied in with many other parts of the cars electrical system. If there are any fluctuations in voltage in this system, the fuel pump will also be affected. Just think about when you have the radio turned up, or running the high beam lights, or maybe when the alternator starts to weaken.
What are the pins on a fuel pump relay?
The relay should have 4 pins on it. They are usually labeled 30, 85, 86, and 87. Steps: 1. Wire pin 85 of the relay to the 12v supply wire from the stock ECU that you just cut. This 12v wire will now energize the relay to turn on. So now instead of the stock ecu energizing the fuel pump, it will energize this relay. 2.
Why do I need to rewire my fuel pump?
When putting in an aftermarket fuel pumpor looking to get more fuel out of your factory pump, one mod worth doing is re-wiring that fuel pump. The purpose of this is to make sure that the fuel pump is getting a good, clean voltage that won’t fluctuate or change based on other electrical conditions the car is going through.
Where is the fuel pump on a cabriolet?
Fuel injected Cabriolets from 1984* to 1993 have 2 electric fuel pumps. The main fuel pump is located beneath the car, passenger side, in front of the gas tank. The second pump, called a transfer pump, is located inside the gas tank; access to this pump is on the passenger side under the rear seat.
How do you wire a fuel pump relay?
Wire pin 85 of the relay to the 12v supply wire from the stock ECU that you just cut. This 12v wire will now energize the relay to turn on. So now instead of the stock ecu energizing the fuel pump, it will energize this relay.