Wiring Harness Conversions for Honda & Acura Engine Swaps Also called a Dual to Multi Point Conversion Harness. Required when swapping on a 88-91 Civic/ CRX "DX" Model *Core Required. For D16, B16A, B17A B18, & ZC Swaps. Note: Standard harness does not include VTEC wiring so if you are going to be wiring in VTEC your self or not using a VTEC motor select standard harness conversion. Honda Civic Engine Harness Connectors and Plugs | Honda-tech Apr 02, 2015Honda Civic: Engine Harness Connectors and Plugs. One of the most important components of an engine is the main wire harness. It routes all the electrical power required for each component and connects them with plugs. This article explains some common problems with wire harnesses and how to properly diagnose and repair them.