The FuelTech Universal 4 cylinder B FT550 expansion harness compliments the Universal 4 cylinder A harness with the options to control up to 8 injectors staged sequentially, have direct connection for inbuilt gear controller as well as the additions to inputs and outputs. The harness comes with a relay with a built in fuse for power supply to the extra 4 injectors. The injectors are to be of high impedance only. The Universal 4 cylinder B harness has a label for each connector and the insulation is heat, moisture and oil resistant.
 
Technical Specifications:
Expansion Harness to FT550 sequential injection for 4 cylinder application with 8 injectors
Harness to be used along with FT450/550 4 CYLINDER UNIVERSAL A HARNESS
Connectors: 
FT550 (Connector B)
4 EV1 injectors (for high impedance injectors only)
FT CAN B connector
GearController sensor connector
Extra INPUTS connector to custom wire up to 5 additional input channels for the engine or chassis datalogging (i.e. driveshaft RPM, transbrake button, suspension travel sensors, input shaft RPM, staging button and much more) - Mating connector kit included
Extra OUTPUTS connector to custom wire up to 8 additional outputs (i.e. boost control solenoids, transbrake solenoid, dump and lockup valves, gear shift, nitrous stages and more) – Mating connector kit included
Relay with fuse for injectors
Attention: This Harness is only compatible with the FT550 ECU and must be used along with FT450/550 4 CYLINDER UNIVERSAL A HARNESS