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.

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

Test Points

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

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

Pins 1 & 10 (Headlight Trigger) – with battery and display turned on, and headlight enabled on the display (hold up arrow), this should read 6V.

Pins 11 & 12 (Headlight Power) – with battery turned on, this should read battery voltage which will be between 27V and 59V, depending on bike model and state of charge.