Is there anyway to tell obdI injectors from obdII injectors by looking at them. I have a set and was wondering which they were. And even still will they work interchangeably. I noticed the plug was different from my b18b wiring harness to the injector plug. But I thought this was because the injector was a for a b18c1 and not a b18b1.

 

the plug on OBD1 injectors, only plug into an OBD1 engine harness and will not plug into an OBD2 injector plug.

OBD1 wire-harness side injector plugs are grey
OBD2 wire-harness side injector plugs are black

all you need to do is compare an OBD1 and OBD2 injector side by side and you'll see the difference.

 

I'm sure there is a way you can hard wire them onto that motor, but that is if they will seat and work properly with that motor.

 

Thanks Katman. So these are obdI. (if they won't fit into an obdII plug)

 

just need to swap the plugs on the harness