The FuelTech PRO600 V8 plug and play harness is the best link between your FT600 ECU and V8 Ford engine. It comes pre-terminated to suit a V8 Ford engine with all relays and fuses for a simple 3 wire battery hook up and ignition power. It has a 37 pin firewall connector to make installation an easy task and with the modular construction, adding a second set of injectors or individual coils is as easy as connecting add-on harnesses utilizing the built in output connectors. Each connector has its own label and the connectors and harness insulation is heat, moisture and oil resistant.