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Old Mar 5, 2011 | 03:43 PM
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Default ls3 injector pinout

I'm modifying an lq4 harness to handle ls3 injectors. I got these injector connectors, but which wire is for signal and which one for +12v?
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Old Mar 6, 2011 | 12:29 PM
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Bump.
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Old Mar 6, 2011 | 12:31 PM
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Isnt the injector labeled (+) and (-) somewhere?
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Old Mar 6, 2011 | 05:28 PM
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No. Any ideas?
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Old Mar 6, 2011 | 06:05 PM
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Pink is 12V, the dark green/black is ground. The LQ4 harness the topmost wire looks to be a faded pink wire, so that's 12V and the white is ground.

What's the LQ4 harness off of? I looked at a couple LQ4 diagrams and can't see any with white ground wires for the injectors.
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Old Mar 6, 2011 | 06:05 PM
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Pin #2 is the control from PCM, Pin #1 power
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Old Mar 6, 2011 | 06:58 PM
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The lq4 connector is on the left. On the right is an ls3 connector I got on eBay. The color of the ls3 may not be accurate. Which is pin 1?
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Old Mar 6, 2011 | 07:23 PM
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They should be numbered. Look at the top by the wires it should be numbered. I just bought the same connectors you did but have not started wiring yet. If need be I can run out the the garage and look at mine.
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Old Mar 6, 2011 | 07:36 PM
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Ok all the white ones are power and the multi colored ones are pcm.
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Old Mar 6, 2011 | 07:43 PM
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I see an "A" and a "B". No 1 or 2 anywhere.
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Old Mar 6, 2011 | 07:44 PM
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Great! Thanks!
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Old Mar 6, 2011 | 09:47 PM
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A=1 b=2
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