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i have a 96 USDM GSR engine, 99 si wireing harness, Skunk2 OBDII to OBDI jumper harness, and a mugen chipped P28 ECU... the problem, the ECU plugs off the 99 Si harness, only two plug into the skunk2 jumper, which is the gray and blue plugs, the green one does not match at all... does the plug need to be changed or do i have the wrong Skunk2 jumper?(i thought they only made ONE ECU jumper) maybe not. or did i screw up all together and get the Wrong ECU? i need some mean style help here, to all that help me out,, thanks a ton.

 

abstrakt is right, there is a 1st and 2end gen obd2, the plugs are differnt and can not be used between each other! just send back and get the second gen 0bd2 harness! good luck, eric

 

The green plug doens't go to the ecu, it's an interior harness plug for the speedo, second O2 and other stuff like that. The ecu plugs are grey and one is blue.

HTH,