Conversions & Swaps LSX Engines in Non-LSX Vehicles
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LS into S10 Wiring Harness

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Old Jan 30, 2019 | 04:34 PM
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Default LS into S10 Wiring Harness

I'm swapping an L33 into a 2003 S10 cc 4wd. I'm determined to do my own harness, after getting pinouts from LT!swap I've stripped the harness and gotten all the on engine connections made. I want to keep the emission function (they may come back in my state) and retain all the functions of the stock S10. I'm finding it a little confusing as to which wires to keep. Can make this easier for me? What circuits or wire do I need off the 5.3 donor vehicle?
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Old Jan 30, 2019 | 05:16 PM
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Emission wise, the ones you might keep are for the Evap Purge, plus the rear O2 sensors. There is no EGR or Air Injection, so emission wise that's pretty much it.
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Old Jan 30, 2019 | 06:03 PM
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Thanks, I've gone back to the LT1swap and found more info which will help. Some of the yellow pins are marked not used which I take to mean there is no wire there. Some are marked yellow like #43 on the green connector that is the AC clutch relay...I would want to retain my ac clutch relay so does that mean to use the one that's on the existing S10 harness?
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