1JZ MAP sensor wires = FIXED now which are fuel pump wires on Z20

[cptsideways]

fuel pump wires goes from yellow round plug on right side of engine bay by the ally resister pack, then through the fender wall into the big loom box on the right footwell. From there theres a big red/black wire that goes back along the right side sill (interior) that is the main pump feed.

Also the Main Relay is on the left side foot well, pretty sure there has a feed across the back of the dash to the right footwell to feed the fuel pump realy -which I could never actually find!! lol

The fuel pump relay is triggered by two feeds, one is for low volts 8v via said resistor pack & one for full volts, I've wired mine using the full volts only, its fed by the yellow square plug (dash loom) under the glovebox, there is a green wire on that & its the switched neg to the fuel pump relay for full volts.

Got my GZ20 / 1JZ loom in pieces as we speak so if you need to know anything asap pm me its the same as an A70 chassis essentially.

[Looonie]

not exactly.

while this will work, its not the "proper" way.

you need to wire up the circuit opening relay, this way the fuel pump only runs when the motor is running.

powering the fuel pump straight off 12V is good while your still figuring the wiring out, as it sorts the fuel side out, and you dont need to think about it anymore (you cant hear or tell if the pump is working while the cars cranking, too loud)

but yeah, not wiring up through the CoR is dodge!

also, bridging the terminal on the "diagnosis" box only works if its connected as it should be, so no help there

Connecting the yellow and yellow/blue wires behind the glovebox is the correct way to interface the 1JZ ECU to the Z20/A70 body loom fuel pump wiring and it should operate exactly as it did from factory.

If you have a aftermarket fuel pump then you generally remove the ballast resistor from the engine bay (drivers side above suspension tower) and join those two wires which will run full 12v to the pump, but retain the relay for proper switching and safety.