The electrical box on the 1992 Kawasaki 750SX is a sealed, waterproof enclosure that houses all primary ignition and electrical control components for the jet ski. It is specifically designed to protect sensitive electronics from moisture, water intrusion, vibration, and corrosion — essential in a harsh marine environment.
This box is typically mounted inside the hull, on the starboard side near the engine, secured with rubber dampers to reduce vibration.
🔧 Main Functions
1.Controls ignition timing and spark delivery
2.Provides starting circuit control (starter relay/solenoid)
3.Routes power from the battery to the ignition system
4.Provides over-current protection (fuses)
5.Acts as a centralized point for electrical diagnostics
🧩 Key Components Inside the Electrical Box
1. 🧠 CDI Module (Capacitor Discharge Ignition)
•This is the core of the ignition system.
•Stores and releases high voltage to the ignition coils at the correct time based on trigger signals from the stator.
•Not programmable — uses a fixed ignition curve designed for two-stroke performance.
2. 🔌 Ignition Coil(s)
•Receives high-voltage pulse from the CDI and delivers it to the spark plugs.
•Usually external to the box but electrically connected via insulated wiring
