Troubleshooting - 12v Accessory Power System


Service Decision:  Service Shop or Do-it-Yourself?

Okay, its looking like there is an issue with your e-bike that will require some disassembly and internal troubleshooting. If you prefer your local service shop to work on your fat woody, it's time to transport it there . If you're comfortable working on your fat woody yourself and have the proper tools, please continue.

Tools Required:

  • Ratchet w/ Metric Sockets
  • Metric Allen Wrench Set
  • Digital VOM / Multimeter


You may want to consider a Fat Woody bike carrier rack. In addition to helping out in this type situation, it's great to transport your Fat Woody to remote areas you might like to explore. Click here for more information.

Safety Note: Elevate rear wheel when troubleshooting the drive system.

Elevate Rear Wheel

When troubleshooting your electric bike, the first thing you always want to do is elevate the rear wheel so the bike doesn't unexpectedly jolt forward.

  • Slide a piece of wood under the cruiser just behind the kickstand. 
  • Lift the rear of the bike by the saddle horn and gently set it on the wood.
  • Ensure the bike is stable. Make adjustments as necessary.


Disassembly Required

Top console reconnected and placed in normal position.

Remove the Left Tank Clam

If you haven't done this procedure before, please visit the 'Disassembly' section of this manual and then return to this point.

Re-Connect Top Console

In order troubleshoot the electric drive system, you'll need to temporarily re-connect the top console so components like the LCD Display and Main Power Switch are operable (with the left clam removed).


⚠️  Warning: Rather than allow the top console to just balance on top, I recommend placing the top console back in its normal position and reinstalling the handlebars. That way things won't fall or get damaged.


Power Up the Electric Drive

Ensure the key switch is turned on (clockwise) and depress the main power switch (far right on top console).

  • Did the LCD Display turn on?
Yes - Sometimes disconnecting and re-connecting a modular connector can fix a bad connection. If you believe this may have fixed your issue, click here.
No - Continue

Check 12v Accessory Battery

The blue 12v Battery Pack is located just below the center tube. On its left side is an on/off switch and a small red LED. When the battery has power and the switch is in the on position ('I' is on), the LED will glow red.


  • Is the RED LED lit on the side of the battery pack?
Yes - (Normal) Click Here
No - (Abnormal) Click Here