So, in the interest of helping fellow 4G63 engine swap enthusiasts, I created a couple of wiring schematics. Â One is a wiring diagram for a 1990 4G63 DSM. Â The other is the wiring diagram for a 1991-94 4G63 DSM. Each one shows how the wiring harness needs to be setup for an engine swap. Â Most importantly, it shows the MPI relay, which is.. 1 2G 4G63 wiring for an engine swap. 1.1 2G 4G63 MPI Relay (Connector B-87) 1.2 2G 4G63 Fuel Injector Wiring; 1.3 2G 4G63 Power Transistor wires: (Connector A-92) 1.4 2G 4G63 Oxygen Sensor (Connector B-26) 1.5 2G 4G63 MAF Mass Air Flow wires: (Connector A-102) 1.6 2G 4G63 Crankshaft Position Sensor wires: (Connector A-04)
![[DIAGRAM] Mitsubishi Galant 2 0 Sohc Engine 4g63 Diagram](https://imgv2-2-f.scribdassets.com/img/document/127915985/original/ab990d2232/1549924793?v=1 "[DIAGRAM] Mitsubishi Galant 2 0 Sohc Engine 4g63 Diagram")
![[DIAGRAM] Mitsubishi 4g63 Engine Ecu Diagram](http://tech.mirage-performance.com/1GDSMharness/images/1G-DSM-EngineHarness.jpg "[DIAGRAM] Mitsubishi 4g63 Engine Ecu Diagram")
Several features are integrated into the DSM engine harness which are not needed becuase they are already integrated into the Starion chassis wiring. These include: defogger, windshield wipers, brake fluid level, and the transmission reverse switch. What You Will Need. 4G63 Engine Wiring Harness; Starion B38 Female Plug or Equivalent; solder. View and Download Mitsubishi 4G6 Series workshop manual online. 1991 to 1992. 4G6 Series engine pdf manual download. Also for: 4g63, 4g64, 4g61, 4g67.