Suits: Bosch EV1 injector connectors and common US style Delco/Bosch GM alternator connector. Includes: Engine Harness, & Three Circuit Fuse Block. Notes: Please confirm your alternator connector (further information available in the product quick start guide) and order an alternator adaptor if required. (HT-040090 or HT-040090) Notes: Pre-wired to connect directly to OEM 7 Pin Coil Harness Connector (LS2 Ignition coils and harnesses are NOT included) E950 ECU Does not support the factory GM idle speed stepper motor control.