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MS3Pro Plug and Play GM LS Alternator Lead Extension Harness



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30″ extension for GM LSx alternator subharness.  Our harness will require this if used with Camaro, Firebird, GTO, or CTS-V accessory drives. You can also use this with aftermarket brackets that move the alternator to a low mount position or relocate it to the passenger side.

We’ve populated all four wires, so this extension isn’t limited to just our harness. You can use it with OEM harnesses or wiring from other sources, and use it with any ECU.

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What sort of harnesses does this work with?

    • We have populated all four pins so it can be used with any wiring harness that uses this connector design. It isn’t just limited to our wiring harnesses – you can use this with OEM wiring or other applications, too!

Where is this harness made?

    • They are made in the USA.

What grade wiring do you use?

    • This harness is made of high temperature TXL wiring with TechFlex F6 woven wrap.

Is the main charging wire included?

    • No. This is just to extend the 4 pin connector.


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