Nozzle size

[SAMzG35]

I’m trying to figure out which one is the negative on the Injectors and I have no idea how to find out. All six injectors share one wire and the second wire is a different color on every injector. So I’m not sure of the common wire is the ground and the ECU supplies power to control IDC, or if the shared wire is power and they are grounded by the EUC to control IDC. Any idea?

[RICE RACING]

Originally Posted by SAMzG35

I’m trying to figure out which one is the negative on the Injectors and I have no idea how to find out. All six injectors share one wire and the second wire is a different color on every injector. So I’m not sure of the common wire is the ground and the ECU supplies power to control IDC, or if the shared wire is power and they are grounded by the EUC to control IDC. Any idea?

Shared wire is 12v
and the individual ones are grounded by the ECU mate.

[SAMzG35]

Originally Posted by RICE RACING

Shared wire is 12v
and the individual ones are grounded by the ECU mate.

Thanks!
Does that mean I can connect the -ve wire on the kit to ECU directly?