QSK23 Cummins Electronic Control Module Wiring Harness 4086083 Parts Catalog Ref No. Part Name Part No. Required 　 Main Extension Harness 3635820 1 　 Wiring Fittings 3635821 1 　 Electrical Terminal 3635326 5 　 Electrical Terminal 3635327 3 　 Wire Seal 3635328 3 　 Wire Seal 3635329 5 　 Wiring Fittings 4017537 1 　 Connector Backshell 4017539 1 　 Electrical …