LIGUORI DRAG RACING • TECH SUPPORT
Hayabusa Gen 1 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 1 component side
Crank:
White wire in shielded cable
Blue wire
Red wire in shielded cable
Green wire
Cam:
White wire in shielded cable
Orientation in sensor does not matter
Sensor ground or bare shielded wire
Throttle position:
5V
Blue wire
Signal input
Yellow wire
Sensor ground
Black wire
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 but factory does not)
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.
(Some aftermarket manufactures are Blue outputs from ECU 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.