Buell P3 Service Manual page 397

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Ignition Fuse
See Figure 7-39. The ignition fuse (5) is in the fuse block
under the seat. Always replace the ignition fuse with a 7.5
ampere fuse.
a0234x8x
1
9
TN/Y
TN/W
[61]
8
TN
7
6
5
1. Key switch
2. System
3. Spare 15A
4. Spare 7.5A
5. Ignition
6. Accessory
7. Diode 2 (starter circuit)
8. Diode 1 (ignition circuit)
9. Lights
Figure 7-39. Fuse Block [61]
7-32 2007 Buell P3: Electrical
Diodes
See Figure 7-39.
(7) for the starter circuit and diode 1 (8) for the ignition circuit.
A diode acts as a one way switch which permits current flow
in one direction, but not in the other.
The circled numbers in the
LOCK diagnostic ignition test flow charts correspond to the
following tests.
1. Check diode with an ohmmeter as shown in
2. Check diode polarity as shown in
Replace diodes as necessary.
2
O
a0235x7x
R2
TN/Y
3
TN/GR
R/BK
4
a0236x7x
The fuse block contains two diodes, diode 2
7.11 STARTER/IGNITION INTER-
Figure 7-41.
Continuity
Figure 7-40. Ohmmeter Diode Test
TN/W
TN
Diode 1 polarity
TN/GN
Diode 2 polarity
Figure 7-41. Diode Polarity
Figure 7-40.
Infinite
ohms
TN/Y
TN/Y