Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Engine harness help

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Old Sep 11, 2011 | 09:20 AM
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Default Engine harness help

Going to a LS motor in my 96' LT1 and im in the process of yanking the motor and harnes today, there is a purple wire with a white stripe that runs from the driver side to the connector for the optispark on the passenger side of the intake. does that wire disconnect any where or do i just need to un-pin it at the location.
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Old Sep 11, 2011 | 10:45 AM
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If its outside of the harness, then its a repair or add-on. What difference does it make when doing a LS1 swap in a 4th gen

Repin the body connectors on the pass fenderwell and plug a 98-02 Fbody engine harness in directly
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Old Sep 11, 2011 | 10:55 AM
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If it plugs into pin B on the opti, it goes to the pcm. It's for high resolution signal. That's the only purple/white wire I can find going to the opti-spark.
Attached Thumbnails Engine harness help-opti.jpg  
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Old Sep 11, 2011 | 11:35 AM
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Correct, the only other ppl/wht wires in the entire are for the drivers HO2s. Point being it its external, its either an add-on or a mod, neither make the first bit of difference for a LSx swap as the whole harness is being removed
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Old Sep 11, 2011 | 05:32 PM
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yep it that high res. signal sweet so i dont have to mess with it thanks
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