The 2002 Yamaha Bulldog BT1100 starting system consists of the starter motor, starter relay, and the starting circuit cut-off relay. If the engine stop switch is on “RUN” and the main switch is on “ON” (both switches are closed), the starter motor can operate only if: The transmission is in neutral (the neutral switch is closed), or if the clutch lever is pulled to the handlebar (the clutch switch is closed) and the sidestand is up (the sidestand switch is closed).

The starting circuit cut-off relay prevents the starter from operating when neither of these conditions have been met. In this instance, the starting circuit cut-off relay is open so current cannot reach the starter motor. When at least one of the above conditions have been met however, the starting circuit cut-off relay is closed, and the engine can be started by pressing the starter switch.

The following schematic diagram shows 2002 Yamaha Bulldog BT1100 Starting Circuit and Wiring Diagram.

yamaha bt1100 starting circuit

1
2
3
4
5
6
7

Battery
Main fuse
Main switch
Ignition fuse
Engine stop switch
Starting circuit cut-off relay
Diode

8
9
10
11
12
13

Clutch switch
Sidestand switch
Neutral switch
Start switch
Starter relay
Starter motor



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