Red Security Light
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,225
Likes: 11,348
From: San Diego, CA
A red security light is a sign of an electrical issue...
Check for burnt bulbs, or maybe a bad brake light switch. I think I read one time that on the BCM bikes it will light up if the key FOB battery is weak, but I could be remembering that wrong.
Did you check for codes?
Good luck with your diagnostics...
Last edited by hattitude; Jul 31, 2025 at 09:50 AM.
Club Member
Joined: Jan 2007
Posts: 3,567
Likes: 1,941
From: NE Florida
This just happened to me yesterday on the way to meet guys for our weekly ride.
I just put new handlebars on and check everything when I was done. After 5 minutes of troubleshooting, I found that the switch for the front brake came unseated from it's mount and the brake light wasn't disengaging. It's funny because I put the tools to take off the brake lever assembly and the switch housing in my saddlebag - just in case. I had 10 minutes before Kick Stands Up and was able to remove everything and reseat the brake switch. Bingo, security light out.
Check your brake switches are working or you might also have a burned out bulb.
I just put new handlebars on and check everything when I was done. After 5 minutes of troubleshooting, I found that the switch for the front brake came unseated from it's mount and the brake light wasn't disengaging. It's funny because I put the tools to take off the brake lever assembly and the switch housing in my saddlebag - just in case. I had 10 minutes before Kick Stands Up and was able to remove everything and reseat the brake switch. Bingo, security light out.
Check your brake switches are working or you might also have a burned out bulb.
Seasoned HDF Member
Joined: Sep 2009
Posts: 25,315
Likes: 2,453
From: Eastern NE
Also, any recent electrical work, or bar swap? Many have fk'd up wiring, grounds & switches, if you don't know what you're doing.
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Tourer
Joined: Nov 2021
Posts: 487
Likes: 338
From: FL winter, northern MI summer
I had that, it was the brake light switch. I replaced it, and it solved another problem also, the cruise control was kicking out.
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