The Predator 670 is a 22 HP (later 24 HP) V-Twin horizontal shaft engine. Understanding its wiring is critical for:
| Function | Wire Color (Stock) | Voltage State (Key ON) | Voltage State (Start) | Resistance to Ground | | :--- | :--- | :--- | :--- | :--- | | Battery Power | Red (Heavy) | +12V | +12V | Infinite | | Chassis Ground | Black | 0V | 0V | 0 Ohms | | Solenoid Trigger | Brown | 0V | +12V | Infinite | | Magneto Kill | Black/White | 0V (Grounded) | 0V | 0 Ohms (when key OFF) | | Fuel Solenoid | Blue | +12V | +12V | 20-50 Ohms | | Stator AC | Yellow (x2) | N/A (Engine running) | 28V AC | Low (0.5 Ohms between yellows) |
When you install a Predator 670 into a non-standard frame, you typically discard the huge, clunky OEM control box. You need a minimalist wiring diagram.
| Symptom | Likely Cause | Fix | |---------|--------------|-----| | No crank, lights dead | Blown main fuse, dead battery, bad ground | Check 30A fuse, clean battery terminals | | Cranks but no spark | Kill wire shorted to ground | Disconnect white/red from oil switch – if spark returns, oil switch bad | | Cranks, spark, but dies after 2 sec | Fuel solenoid not getting 12V | Check orange wire voltage with key ON | | Battery drains overnight | Regulator leaking back | Unplug regulator red wire – if drain stops, replace regulator | | Engine won’t shut off with key | Ignition switch M terminal not grounding | Check wire to switch, or switch internal failure |