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Guide · SURRON Ultra Bee

SURRON Ultra Bee wiring harness diagram

A clear, tested diagram of the Ultra Bee’s wiring harness is on the way. I’m still toning out the wires one by one, and I’m nearly done. It will be published here as soon as it has been checked.

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Why it’s taking a little while

Factory wiring information for the Ultra Bee is hard to find, and what does circulate is often wrong. So I’m tracing every wire myself (“toning it out”: testing each conductor end to end) before anything goes on this page. A harness diagram you can’t trust is worse than none.

What to expect

Connector-by-connector layout of the harness
Wire colours and where each one goes
Which connectors matter for the battery, charge port and CAN bus
Notes for anyone installing BeeLatch or other add-ons

In the meantime

Reference material

While I finish verifying my own diagram, here is what’s out there. Treat all of it as a starting point, not as something to wire from.

Manufacturer circuit diagram for the Ultra Bee: horn, lights, switches, MCU, throttle, motor, battery pack with BMS, charger and CAN-H / CAN-L — Manufacturer’s “Motorcycle Electrical Circuit Diagram Troubleshooting” from the Fetch Light / SURRON maintenance material. A block-level overview, not a pin-by-pin harness. Tap to enlarge. © its owner; shown here for reference.

Ultra Bee battery bay with the orange high-voltage connector, battery pack and wiring — The Ultra Bee battery bay: the orange high-voltage connector, the pack and the surrounding wiring. Reference photo; © its owner.

Community redraw of the Ultra Bee main harness, labelled as an unverified AI redraw — **Unverified.** A community redraw of the Ultra Bee main harness (24100-YG5A-0000), labelled by its author as an “unverified AI redraw”. **Do not wire from it.** Compare every pin and colour with the original. I have not verified it, and my own traced diagram will replace it.

Planned, not published. Until the diagram is verified I won’t post wire-by-wire details, so nobody works from a guess. Wiring on a high-voltage vehicle can be dangerous: disconnect the battery and work at your own risk. We’re also planning to include the diagram in the BeeDash app.

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