Our wiring conversion harness makes it easy to wire a K series into your Miata.
It's designed to pair with Hondata Kpro, which needs to be installed in a 2002-2004 Acura RSX ECU. An engine wiring harness from the same vehicle must also be used (automatic or manual harnesses both work).
For installation, nine wires need to be spliced into the factory Miata dash harness, and the rest is almost all plug and play. We recommend modifying the factory Honda harness slightly to accommodate for different lengths needed for the RWD configuration.
Once the wiring is completed, the factory Miata gauge cluster is 100% functional. Complete wiring instructions can be found in our installation guides here.