Headlight Board Pin-out and Test Points

15 Pin Connector

P/N: TE Connectivity 4-643814-5

When looking at the connector as shown, pin 15 is on the left and pin 1 is on the right. The pin numbers are also molded into the plastic of the connector body.

To probe these pins you leave the connector attached to the headlight, and you can simply put a multimeter probe where the wire enters the connector, you will see metal tabs sticking up around the wires, place the probes on those metal tabs.

Use caution when probing the connector, that you do not let the probes touch and create a short circuit.

For wires with 2 colors, the second color listed is the stripe.

Test Points

If the display does not turn on:

5 Pin Connector: Pins 1 & 4 (Display Power) – with battery turned on, this should read battery voltage which will be between 27V and 60V, depending on bike model and state of charge.

Pins 1 and 4 should have between 30V and 60V present.

If the display turns on, but the motor does not run:

15 Pin Connector: Pins 1 & 2 (5V Power) – with battery and display turned on, this should read 5V.

15 Pin Connector: Pins 1 & 8 (Throttle) – with battery and display turned on, this should read 0.9V.

If your bike runs, but headlight does not work:

15 Pin Connector: Pins 11 & 12 (Headlight Power) – with battery turned on, this should read battery voltage which will be between 27V and 60V, depending on bike model and state of charge.

15 Pin Connector: Pins 1 & 10 (Headlight Trigger) – with the battery and display turned on, and headlight enabled on the display (hold the up arrow for a few seconds), this should read 6V.