FuelTech 2002006505 is a complete plug-and-play harness and is the only required harness for a 4-cylinder application when using the FuelTech FT450. When using or upgrading to the FuelTech FT550 or the FT550LITE and in order to utilize all of the extra inputs and outputs, the 2002006600 Universal "B" expansion harness is also required.

FuelTech 2002006505 Pre-Wired Connectors:

• (4) EV1-Style Fuel Injectors such as FuelTech Low-Impedance Peak-and-Hold Injectors (or equivalent) wired in semi-sequential
• (1) FuelTech Peak-and Hold Injector Driver (4 injectors)
  • When using high-impedance injectors a peak-and-hold driver is not required, only the included bypass connector
• (4) IGN1A Smart Coils wired in waste spark
• (1) FuelTech WB-O2 Nano wideband oxygen sensor display and conditioner
• (1) GM-style intake air temperature sensor such as FuelTech 5005100015 (or equivalent)
• (2) Pressure sensors for fuel, oil, or any 0-5 volt sensor such as FuelTech 5005100021 (or equivalent)
• (1) GM-style engine temperature sensor such as FuelTech 5005100016 (or equivalent)
• (1) Extra output for generic use
• (3) Power relays (fused relays included w/harness)
• Crankshaft and camshaft sensor ready with both hall-effect and variable reluctance (VR) ready

Note: To activate coils and injector relays the blue number 6 output must be configured as a fuel pump or RPM activation