Alarm removal & bypass
Confirm the alarm is the problem, then replace it, add a bypass switch, or remove it for a key switch.
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safety
You're working on wiring connected to a 72 V system. If you're unsure, use a qualified technician.
safety
Bypassing the alarm removes the bike's immobilizer. Use a key switch so the bike can't be started by anyone.
01Tools you’ll needall tools →
02Parts
- Alarm module & key fobsunverifiedAliExpress (seller not confirmed)
- Key switch (alarm bypass)unverifiedAmazon
- Alarm plug (DJ7065F-2.2-11)unverifiedAmazon
03Steps
The alarm module can fail without warning and its key fobs’ batteries die. A former Sondors engineer called it one of the bike’s worst features.
Wire colours differ on each side of the plug:
- Alarm red = harness red with white stripe
- Alarm orange = harness yellow
- Alarm pink = harness blue with white stripe
Confirm it’s the alarm
Take off the seat: undo the two bolts (5 mm Allen), then pull up on the front while sliding it forward.
On the harness side, bridge the red/white wire and the yellow wire with a spare piece of wire or a paperclip. Bike turns on: the alarm is the likely fault. Bike stays off: the problem isn’t the alarm; go back to Won’t power on.
Reconnect the alarm to make sure it still doesn’t work. If the bike now works with the alarm connected, the cause may have been excessive heat.
Option A: replace the module
Order a replacement alarm module first (it comes with two fobs). The old module is held on with sticky tape: unplug it from the harness, then pull hard to pry it off.
Keep the old unit until the new one works. Replacements sometimes come with a different plug, so you may need to splice the new unit’s wires onto the old plug.
Option B: replace + switchable bypass
One owner fitted a three-position key switch: one position keeps the alarm working, another bypasses it. This needs drilling. Follow the video. Bridging to the alarm’s pink wire (harness blue/white) as well also lights the power button.
Option C: total bypass with a key switch
Wire a key switch between the alarm’s orange (harness yellow) and red (harness red/white) wires. A 20 mm diameter switch fits without drilling.
To avoid cutting the bike’s harness, wire the switch to a spare DJ7065F-2.2-11 plug and plug that in where the alarm was.
Tick steps as you go. Ticks stay on this device only.