Suzuki GSF1200S 2001 Service Manual page 246

The circuit consists of the turn signal/side-stand relay, neutral indicator light and switches. The ignition coils
will send voltage to the spark plugs dependant on what gear the transmission is in and whether the
side-stand is either up or down. The gear position and side-stand switches work together in this system.
The ignition coils work only in two situations as follows.
1. Transmission: Neutral (ON)
The current flow A switches "on" the side-stand relay and the ignition coils send voltage to the spark
plugs even when the side-stand is kept down.
Ignition switch
Battery
2. Side-stand: Up (ON)
The current flow B switches "on" the side-stand relay and the ignition coils send voltage to the spark
plugs. The engine can be started in any gear.
Ignition switch
"ON"
Battery
Side-stand: Down (OFF)
Turn signal /
side-stand relay
"ON"
Turn signal /
side-stand relay
Side-stand relay "ON"
Ignition coils
Gear position
switch "ON"
Side-stand relay "ON"
Ignition coils
Gear position
switch "OFF"
ELECTRICAL SYSTEM 6-19
Side-stand switch
"DOWN POSITION"
Side-stand switch
"UP POSITION"