Used factory engine control unit wiring harness for Early NB Mazda Miata. This is the wiring harness that connects to the engine sensors on the engine and then goes through the firewall. This harness then connects to the engine control unit located under the dash on the driver side. Also known as the ECU wiring harness. Part numbers NC16-67-020E (manual transmission) or NC16-67-020D (automatic transmission). Fits 1999-2000. Choose type of transmission.
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