Guys,
Im just about ready to fit my ZZ4/HSR/T56 into my 85 Transam.
As ive got the Commander 950 pro engine management,ive removed all the wiring loom that came from the original ECU.In amongst that wiring are the connections that go on the back of the engine to the oil pressure switches and senders
My question is,how do i rewire the oil pressure sender?

thanks

PM

 

It would just be a matter of finding the wire (thin tan wire) where you cut it and extending it to the rear of the intake manifold and putting a connector on it. Then put the sender on and plug it in.

 

No i didnt cut anything.Ive taken out the original ecu and then all the wiring that was in that loom and in amongst what came off was the wiring for the oil press.switches.
Also,can you tell me which one of the senders is for the oil prseeure guage.I know that one of them is for that and the other is to do with a fuel pump cut out if the pressure drops real low.
But which is which?
PM

 

sorry here's the pic.
PM

 

The larger, single wire sender is for the gauge.
The other is only a failsafe backup for the fuel pump relay, it has zero function in cutting off the fuel pump if the oil pressure drops to low.
The switch closes after about 5psi of oil pressure. If the fuel pump relay were to ever fail, the switch closes at the set psi and then supplies power to the fuel pump so you're not stranded.
The switch is wired in parallel with the power line to the fuel pump. You can actually just junk the switch.