I tested the plug in the engine bay on the passenger fender and was getting 13.1V to it. I proceeded to check power at the pump and was only getting 11.7V.
So I figured I'd give it a shot.
I bought a SPDT Bosch relay and socket offline for around 7 bucks and already had enough wire to run to the relay from the Battery since I've relocated it to the trunk.
You'll only need to wire 4 wires from the relay
terminal 30 will be your feed from battery/I installed a inline fuse between the battery and relay
terminal 87 will be the wire going into the pump
terminal 87A will not be used
terminal 86 will go to the harness side of the car
terminal 85 will be a ground
I cut the large blk/ylw wire at the plug in the rear hatch and wired in the relay here...the plug is located almost at the very rear of the hatch on the floor.
This is probably one of the easiest mods I've ever done to this car.
After wiring everything and heat shrinking I retested the voltage going into the pump and it went from 11.7 to 13.2 volts
Well worth the hour I spent wiring and heat shrinking!!
After everything was finished I ran the car and it held a steady 38lbs of fuel pressure
Edited by 81zfan, 26 April 2019 - 11:15 AM.