This is the HKS VPC Installation harness. This harness inserts in-between the factory wire harness and the ECU. When you place this intermediate harness, you can splice piggyback components into this harness much more easily. Use this for any component that you choose. Also realize that you can take this harness to your workbench to do the wire-work, then just plug it in at the ECU. Much more easy than working upside down in the car!

We have one 87-88 harness left in stock.  They are discontinued.  If we find more we will make them available again.