The electronic fuel injection system uses computer-controlled fuel injectors to spray fuel into the engine rather than mechanically controlled injectors or a carburetor.
The following schematics shows Ford Racing Multipoint EFI Wiring Harness for 1986-1993 5.0L Mustang. This components features one connector for all required connections, a single harness with integral connections for injectors and O2 sensors, direct fit on 1986-’93 302 H.O. engines, compatible with engines using both H.O. and non-H.O. firing orders, provisions for electric fan control, a kit includes fuse and relay box, "Check Engine" light, and needed grommets.