2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

What color are the primary and secondary fuel injection wire on a s4 t2

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Old Jun 7, 2004 | 11:05 AM
  #1  
redt203's Avatar
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From: boston
What color are the primary and secondary fuel injection wire on a s4 t2

Just trying to find out where to to connect the injector [plugs . I found one branch with 3 square plugs i think one goes to the bac but cant figure out on what injector plugs the other two go on. The other branch has a ground , and two white plugs Im pretty sure one goes to my air temp not sure what the other one for , maybe for my knock sensor . And yes Ive searched any help PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Old Jun 7, 2004 | 03:45 PM
  #2  
J-Rat's Avatar
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From: Hood River oregon
Dude, if your ecu harness is lying on the motor correctly, the wires should pretty much line up.. Can you get a pic?
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Old Jun 7, 2004 | 05:33 PM
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From: Gainesville, FL
the one that has 3 plugs are 2 injectors. not sure if its for rear rotor or front. and the other one with 2 white plugs and ground is for TPS, Air temp sensor and knock sensor.

just remember that with teh harness, the 2 plugs are for 1 rotor. NOT one section for primary and one for secondary. it is 1 harness for each rotor.
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Old Jun 8, 2004 | 04:01 AM
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From: Auckland, New Zealand
The injectors plugs should basically fall onto the right injector. If you have to pull the wires to reach, it's the wrong one.

If you really need to pull all the insulation off the wires to check the colours, here's what you're looking for. All four have one black/yellow wire from the main relay, and another wire that goes to the ECU:

Front primary: light green
Front secondary: light green/white
Rear primary: light green/black
Rear secondary: light green/red

Next time you'll know to label each plug with a permanent marker.
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