Buell S1 Lightning Workshop Manual page 297

TESTING DIODE S14/S15
1. Disconnect the following connectors:
a. Instruments and indicator lamps [P3].
b. Clutch switch [P5].
c. Ignition relay [P12].
2. Test for continuity in both directions between ignition
relay [P12] wire 85 (TN/W) and clutch switch [P5] wire 1
(TN/GN). Ohmmeter should show continuity in one direc-
tion, but not the other. Replace the diode with a new
diode if necessary.
3. Attach connectors separated in Step 1.
Ignition Relay
See Figure 7-16. The ignition relay is under the tail section
along the right side frame tube. Test the relay as follows.
1. Remove seat and fuel tank. See
in Section 4.
2. Remove mounting bolt to detach relay from frame.
3. Disconnect the 4-place connector [P12].
4. Test the relay in the same fashion as the starter relay.
See Section 5.
5. Replace the relay with a new relay if necessary.
Starter Relay
The starter relay is on the left side forward of the oil tank. See
STARTER SYSTEM TESTING
Main Circuit Breaker
See Figure 7-16. Attached to the frame above the battery, the
main circuit breaker is between the ignition key switch and the
battery. The main circuit breaker can be removed as follows.
1. Remove seat and fuel tank. See
in Section 4.
2. Remove battery negative terminal from frame.
3. Remove nuts and wire leads from circuit breaker studs.
4. Remove circuit breaker from circuit breaker clip.
Ignition Fuse
See Figure 7-17. The ignition fuse is in the fuse block under
the right side of the tail section. Always replace the fuse with
another 15 ampere fuse.
7-22
FUEL TANK, REMOVAL
in Section 5.
FUEL TANK, REMOVAL
5732
Ignition relay
Circuit breaker
Figure 7-16. Ignition Relay and Circuit Breaker
b0242x7x
VIEW FROM FUSE
INSERTION SIDE
IGNITION
GY/O
15A
O
INSTRUMENTS
O
15A
LIGHTS
BE
15A
ACCESSORIES
O/W
O/W
15A
SPARE
FUSE
FUSE BLOCK
P11
NOTE
Depending upon vehicle production date, there may be
one or two blue wires exiting the LIGHTS socket of the
fuse block. Early 1996 vehicles have a blue wire without
a terminating connection.
Figure 7-17. Fuse Block
R/BK
R/BK
R/BK
R/GY