6.7 Cummins Injector Wiring Identification

[quipstad]

I'm installing the Edge tuner today and part of the tuner wiring harness goes inline with the injector harnesses, but the instructions aren't clear on which injector harness is for injectors 1-3 and which is for injectors 4-6.

I've torn the internet apart trying to identify which is which but I can't be certain. Both are on the driver's side of the engine, one towards the front and one towards the back. Which is for injectors 1-3 and which is for 4-6?

 

[Fast69Mopar]

I'm installing the Edge tuner today and part of the tuner wiring harness goes inline with the injector harnesses, but the instructions aren't clear on which injector harness is for injectors 1-3 and which is for injectors 4-6.

I've torn the internet apart trying to identify which is which but I can't be certain. Both are on the driver's side of the engine, one towards the front and one towards the back. Which is for injectors 1-3 and which is for 4-6?

If you are looking at the wiring harness that connects to the injectors, the short lead is for Injectors 1-3 and the Long lead is for Injectors 4-6.

The wire colors in the Edge Harness is as follows:

Cylinders 1-3

#1 Orange/White
#2 Red/White
#3 Brown/White

Cylinders 4-6
#4 Blue/White
#5 Green/White
#6 Tan/White

 

[quipstad]

Thanks, but that much is clear from the instructions. What wasn't clear is which plug in the engine bay is for which set. On the vehicle side, which plug is towards the front and which one is towards the rear? The colors don't match up with the Edge harness, so I have to know by location/orientation.

I'm also not sure not sure the reason for disconnecting the large plug with the lever on it that's attached to the cowling, and whether to disconnect that first, or second, and when to plug it back in.

 

[quipstad]

My research seems to indicate that 1/2/3 is in the front, and 4/5/6 is in the back. But I'd like to be sure before routing the harness.

 

[superjoe83]

compare this to your truck, its for a '17, but I doubt that cummins changed the colors.

View media item 28494

 

[Fast69Mopar]

My research seems to indicate that 1/2/3 is in the front, and 4/5/6 is in the back. But I'd like to be sure before routing the harness.

1-2-3 is in the forward connector and
4-5-6 is in the rear connector.

Once you disconnect the batteries, disconnect the large plug and leave it disconnected while you work. All this does is isolate the system and wiring while you perform the installation.

 

[quipstad]

1-2-3 is in the forward connector and
4-5-6 is in the rear connector.

Once you disconnect the batteries, disconnect the large plug and leave it disconnected while you work. All this does is isolate the system and wiring while you perform the installation.

Thank you so much! This is exactly what I needed.

 

[Fast69Mopar]

No worries. Enjoy!!