LIGUORI DRAG RACING • TECH SUPPORT
Hayabusa Gen 2 Wiring
Original guide content, diagrams, and calibration values. Original update dates are retained within the guide.
Last updated 1-1-23
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FuelTech 450/550 side of harness
Hayabusa gen 2 component side
Crank:
White wire in shielded cable
Blue wire
Red wire in shielded cable
Green wire
Cam:
12V
Blue wire
White wire in shielded cable
White wire
Sensor ground or bare shielded wire
Black wire
Throttle position:
Signal input
Pink wire on stock harness
5V
Red wire on stock harness
Sensor ground
Black wire on stock harness
Engine temperature:
Signal input
Orientation in sensor does not matter
Sensor ground
Air/intake temperature:
Signal input
Orientation in sensor does not matter
Sensor ground
Factory gear position:
Signal input
Pink wire
Sensor ground
Black wire
Blue wire is not used
DOES NOT GET 5V (My aftermarket sensor does get 5v)
Liguori gear position sensor:
5V
Green
Signal input
White
Sensor ground
Black
Speed/Driveshaft:
5V or 12V
Black/red stripe wire
Signal input
Black wire
Sensor ground
Black/white stripe wire
Factory coils:
12V switched power
Orientation does not matter
Green wires from SparkPro4 (Ground)
Injectors: 12V switched power Orientation does not matter.
Blue outputs from ECU
(Some aftermarket manufactures are polarity sensitive. Check with the manufacturer.)
Stator/Rectifier:
3 Yellow wires on the stator connect to 3 black wires on the rectifier.
(Orientation doesn’t matter on these 3 wires)
Black/Red stripe wire to battery 12v+ positive.
Black/White stripe wire to battery- negative.