Fuses
See Figure 1. The electrical circuits are protected by three fuses. Individual vehicle circuits are protected by the Body Control Module (BCM).
Main (1): A 40A fuse that protects all the circuits including those protected by the 15A Battery fuse. Failure of this fuse will cause the motorcycle to stop running. See a Harley-Davidson dealer.
P&A (2): A 15A fuse protects the circuits of any installed accessories.
Battery (3): A 15A fuse that protects all the circuits. If the battery fuse fails while the engine is running, the engine will continue to run and critical circuits like the ABS brakes will continue to function. The failure of this fuse will trigger a diagnostic code. See a Harley-Davidson dealer.
1Main
2P&A
3Battery
Figure 1. Fuse Block
Removal
  1. If equipped with security system siren, turn the ignition to ON with the fob present to disarm the security system.
  2. All Models except FXCWC: Remove the seat. See Maintenance and Lubrication → SeatsFXCWC: See Maintenance and Lubrication → Battery → Battery Cover Removal Slot: FXCWC. Lift the rear of the seat toward fuel tank and remove the battery cover.
  3. FLSTSB: See Maintenance and Lubrication → Battery → Frame Fairing: FLSTSB Models. Remove the frame fairing.
    1. Remove thumbscrew from frame fairing.
    2. Lift rear of frame fairing. Raise fairing over the seat mounting pins.
    3. Pull fairing to the rear and remove.
  4. Disconnect and remove battery negative (-) cable (black) from battery negative (-) terminal.
  5. See Figure 2. Pull cover off fuse block.
  6. See Figure 1. Remove suspect fuse.
Figure 2. Fuse Block Location
Installation
NOTICE
Always use replacement fuses that are of the correct type and amperage rating. Use of incorrect fuses can result in damage to electrical systems. (00222a)
1. Install new fuse.
2. Place cover on fuse block.
3. Install battery negative cable (black) to battery negative (-) terminal. Tighten fastener to 6.8–7.9 N·m (60–70 in-lbs).
4. FLSTSB: See Maintenance and Lubrication → Battery → Frame Fairing: FLSTSB Models. Install frame fairing.
a. Insert fairing tab in frame bracket at the base of the fuel tank.
b. Lower fairing holes over the seat mounting pins.
c. Hand-tighten the thumbscrew.
WARNING
After installing seat, pull upward on seat to be sure it is locked in position. While riding, a loose seat can shift causing loss of control, which could result in death or serious injury. (00070b)
5. All Models except FXCWC: Install seat. See Maintenance and Lubrication → Seats. FXCWC: Install the battery cover, lower seat and press down to engage locating pins.