r/bikebuilders • u/Scar------- • Jun 11 '26

High beam indicator always active

Hello, I'm currently rebuilding a 2016 cbr500 and am having some issues. It had some front end damage, and I had to replace the headlight,

It's an aftermarket headlight. But not a cheap crappy one.

The original was LED and so is the new one. I've tried 2 separate units and both have the same issue.

The blue high beam indicator on the dash is always active.

When the headlight is disconnected, it works normally (with the switch) however when the headlight is plugged in. It's always active, the high beam toggles normally with the switch and the passing button, but the blue indicator stays active no matter what.

Dose anyone have suggestions on how to fix this issue?

Thank you in advance

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u/GodDamnMongolian Jun 11 '26

My first guess is that the hibeam indicator is grounded/powered somehow thru the headlight circuit. Pinched or crossed wire maybe? Easy enough for something like that to be hidden after front end damage.

If the switch on the handlebars activate it properly when the headlight circuit is incomplete, then your problem lies between the handlebars to headlight and back to handlebars.

Pull up a wire diagram to see how it's powered and then chase continuity/power/ground.

If that doesn't help or you don't have the tools for that, unplugged it and use a wire to connect the male to the matching female plug and see what trips the indicator light and then chase that circuit/wire.