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If you are looking to add a MAPECU 2/3 or just relocate the factory harness, without cutting and splicing 100 wires, we have a solution for you.  Our patch harnesses allow all of your splices and taps to take place outside the factory harness, leaving it unharmed should you choose to revert back to stock (Wait...what did he say?) in any case we offer semi-custom harnesses to suit your needs.  Contact us if you have a make/model not listed.


-Standard patch harness is 6" length with white wiring. Contact us if you want/require black wire as it is extra.

-Direct fit to factory ECU plugs and ECU board connections.  ECU side is a single connector whereas the plugs are separate like the stock harness.

-Wires are not in a  loom.

-Prewiring available for MAPECU 2/3

-For custom requirements contact us.

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  • $204.75

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Tags: ecu. patch, harness, extension, 2jz, is300, gs300, gs400, gs430, sc300, mkiv, supra, mapecu