red/blue harness question???
red/blue harness question??? I have a take out LS1 from a 2003 vette with a blue/red PCM connector. Lt1swap shows the blue/red connector going from 99-02 and the 03-07 using the blue/green pcm connector.
http://www.lt1swap.com/2000harness.htm
So is the color of the connectors more important than the model/year of the car they were out of? Do I just use the info and wiring diagrams for the red/blue connector and forget the year. To complicate things even more, I have confirmed my PCM has the chip to run this drive by cable which should be a 03 computer. So how does a blue/red harness come on a 2003 computer and car?
I am confused! Help please!
Mike
http://www.lt1swap.com/2000harness.htm
So is the color of the connectors more important than the model/year of the car they were out of? Do I just use the info and wiring diagrams for the red/blue connector and forget the year. To complicate things even more, I have confirmed my PCM has the chip to run this drive by cable which should be a 03 computer. So how does a blue/red harness come on a 2003 computer and car?
I am confused! Help please!
Mike
Read the side of your PCM, the colors should be stenciled there in black. GM used the 411 computers on cars and trucks, just rearranged the pinouts to suit the year model and needs...
T,
T,
Thanks Tom for the reply!
The computer also says blue/red. What is confusing is the LT1swap diagrams say this engine/ PCM combo should never have been in a 2003 vette. As I am installing this engine in a Cobra replica I have some major mods to do to the harness. I can't do the mods until I am sure which wiring diagram to use.
The only issue is making sure I am using the correct schematic to modify my harness. So are ALL blue/red harnesses and PCM's exactly the same?
The computer also says blue/red. What is confusing is the LT1swap diagrams say this engine/ PCM combo should never have been in a 2003 vette. As I am installing this engine in a Cobra replica I have some major mods to do to the harness. I can't do the mods until I am sure which wiring diagram to use.
The only issue is making sure I am using the correct schematic to modify my harness. So are ALL blue/red harnesses and PCM's exactly the same?
Last edited by mmarshall; Apr 6, 2012 at 02:25 PM.
Thanks Tom for the reply!
The computer also says blue/red. What is confusing is the LT1swap diagrams say this engine/ PCM combo should never have been in a 2003 vette. As I am installing this engine in a Cobra replica I have some major mods to do to the harness. I can't do the mods until I am sure which wiring diagram to use.
The only issue is making sure I am using the correct schematic to modify my harness. So are ALL blue/red harnesses and PCM's exactly the same?
The computer also says blue/red. What is confusing is the LT1swap diagrams say this engine/ PCM combo should never have been in a 2003 vette. As I am installing this engine in a Cobra replica I have some major mods to do to the harness. I can't do the mods until I am sure which wiring diagram to use.
The only issue is making sure I am using the correct schematic to modify my harness. So are ALL blue/red harnesses and PCM's exactly the same?
