C2 Connector, Pink wires...
Thread Starter
On The Tree
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Joined: May 2008
Posts: 177
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From: Moorhead Minnesota
C2 Connector, Pink wires... I'm probably just an idiot, but I cant figure out exactly what each of the pink wires does on my C2 connector. I have an 03 wiring harness I'm stripping down to standalone.
I'm using the list from lt1swap.com, ( http://lt1swap.com/vortec_truck_pinouts/2003.htm )which I know has been used 1000x before. What confuses me is most of the pink wires in the pinout just say "ignition 1 voltage," not certain injectors or whatever. I only see Injectors 2/4 and MAF/PCM.
I just want to make sure that eventually I'm only supplying power to the things I need, nothing I dont. I guess if I have to just start chasing wires I will, but I assume I'm just being an idiot and reading things wrong. Its been a rough week... ha!
Any help appreciated, thanks!
I'm using the list from lt1swap.com, ( http://lt1swap.com/vortec_truck_pinouts/2003.htm )which I know has been used 1000x before. What confuses me is most of the pink wires in the pinout just say "ignition 1 voltage," not certain injectors or whatever. I only see Injectors 2/4 and MAF/PCM.
I just want to make sure that eventually I'm only supplying power to the things I need, nothing I dont. I guess if I have to just start chasing wires I will, but I assume I'm just being an idiot and reading things wrong. Its been a rough week... ha!
Any help appreciated, thanks!
TECH Apprentice
Joined: Oct 2013
Posts: 319
Likes: 4
From: Longview, TX
Here is what I believe that you should be looking at for the C2 connector...ALL Pink wires are powered thru a relay that turns on with the ignition.
PIN, CIRCUIT #, FUNCTION
A9, 1339, Not sure on this one, trace wire to see where it goes...May NOT be needed
A12, 439, PCM turn on
B9, 1039, Coils 1 3 5 7
B10, 439, PCM turn on
C10, 1039, Injectors 1 & 3
D8, 539, Front O2 Sensors
D9, 1239, Coils 2 4 6 8
D10, 1039, Injectors 5 & 7
E6, 1239, Injectors 2 & 4
E7 1539, Rear O2 Sensors
E10, 1239, Injectors 6 & 8
E11, 1020, Transmission and PCM
F8, 839, Not sure on this one, trace wire to see where it goes...May NOT be needed
F9, 639, Not sure on this one, trace wire to see where it goes...May NOT be needed
F10, 1020, Transmission & PCM
Hope this helps. On the last harness I did, I grouped each identical circuit number together and connected it to a single point protected by a fuse off of the power turned on by the relay.
PIN, CIRCUIT #, FUNCTION
A9, 1339, Not sure on this one, trace wire to see where it goes...May NOT be needed
A12, 439, PCM turn on
B9, 1039, Coils 1 3 5 7
B10, 439, PCM turn on
C10, 1039, Injectors 1 & 3
D8, 539, Front O2 Sensors
D9, 1239, Coils 2 4 6 8
D10, 1039, Injectors 5 & 7
E6, 1239, Injectors 2 & 4
E7 1539, Rear O2 Sensors
E10, 1239, Injectors 6 & 8
E11, 1020, Transmission and PCM
F8, 839, Not sure on this one, trace wire to see where it goes...May NOT be needed
F9, 639, Not sure on this one, trace wire to see where it goes...May NOT be needed
F10, 1020, Transmission & PCM
Hope this helps. On the last harness I did, I grouped each identical circuit number together and connected it to a single point protected by a fuse off of the power turned on by the relay.
