travypoo
10-25-2010, 02:50 PM
Hey guys, I had a couple questions regarding wiring up the sr harness. I have went through the ultimate wiring thread and searched around quite a bit and I am still unsure. I currently have a 91 180sx that i pulled the sr from. I bought a 93 240sx that has been wired with a painless kit(car is a drift/track car only). I bought a wiring specialties SR into 240sx ecu wiring harness. The brown plug and the big grey plug that normally plug into the relay box under the hood will all have to be re wired to constant and switched power. however i am unsure of what to do with two of the wires that everyone says are needed to get the engine running.
The car has twin walbro fuel pumps that work off of switches, so is this wire even needed?
Black/Pink - fuel pump relay ground pin controlled by pin 104 of ECU, connect to ground pin of fuel pump relay, the ECU uses this pin to turn on and off the fuel pump relay
This wire also...should i be wiring up a relay in the ecu wiring, or where should this go if no relay is used?
Red/Black - ECU relay ground pin controlled by pin 4 of ECU, connect to ground pin of ECU relay, the ECU uses this wire to turn on and off an ECU relay that supplies main power to the engine
thanks for the help, hope these arent too silly of questions. i am somewhat new to wiring.
The car has twin walbro fuel pumps that work off of switches, so is this wire even needed?
Black/Pink - fuel pump relay ground pin controlled by pin 104 of ECU, connect to ground pin of fuel pump relay, the ECU uses this pin to turn on and off the fuel pump relay
This wire also...should i be wiring up a relay in the ecu wiring, or where should this go if no relay is used?
Red/Black - ECU relay ground pin controlled by pin 4 of ECU, connect to ground pin of ECU relay, the ECU uses this wire to turn on and off an ECU relay that supplies main power to the engine
thanks for the help, hope these arent too silly of questions. i am somewhat new to wiring.