TBI injector wiring color/location???

[GMC Truck]

There are two injectors and a red/green on one injector and a red/blue on the other. Does it matter which one goes on which injector? The ECM has injector driver "A" and "B" but my harness has pink/green wires for both!? Basicly I need to know which injector is "A" and which is "B" and I can trace back to find the right wires. Is "A" the driver side and "B" the pass side?

 

[dave w]

blue / red - passenger side

dave w

 

[GMC Truck]

blue / red - passenger side

dave w

I dont have a red/blue? Both of my harness connectors are pink/green?? Is the pass side "B" injector or "A"?

 

[dave w]

I dont have a red/blue? Both of my harness connectors are pink/green?? Is the pass side "B" injector or "A"?

I have several different wiring diagrams. None of the wiring diagrams I have show pink/green. The only diagram that comes close is my Mitchell's Manual 1987 R10 wiring diagram showing both injector wires at the ECM are Lt GRN (light green) wires:

Injector Driver A (also Injector 1) is ECM Pin D16 with a Lt GRN wire then spliced to a BLU (blue) wire.

Injector Driver B (also Injector 2) is ECM Pin D14 with a Lt GRN wire then spliced to a GRN (green) wire.

So I'm going out on limb here, based on just one of my wiring diagrams:
Injector wire to ECM D16 (Injector Driver A / Injector 1) is Passenger side.
Injector wire to ECM D14 (Injector Driver B / Injector 2) is Drivers side.

dave w

 

[GMC Truck]

I kinda came to the same conclusion based on the colors that you gave me. The wires in that van harness are light green with black stripe / pink with black stripe. The reason im lost here is that the injector pigtails were cut off when I got this harness from a junk yard.

 

[dave w]

Usually pink wires with black stripe (PNK/BLK) will have 12V (battery power) from the ignition switch when the ignition switch is in the either the "ON / START" position. Besure to use an ohm meter from the ECM pin to the injector connector. Always unplug the ECM connectors from the ECM when using an ohm meter.

dave w

 

[TommyM]

Why does it matter? TBI uses one O2 sensor after the "Y."

Tommy