Need help
Club Member
Joined: Dec 2014
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From: SWFL
Club Member
Joined: Dec 2014
Posts: 10,734
Likes: 3,755
From: SWFL
Actually I take it all back. Since your turns work that confirms both the bulbs and wires as the turns use the same circuit as the brake. Since you say both front and rear brakes don’t trigger that mostly rules out a bad switch. Probably BCM if you haven’t done anything to cause it. All I got, sorry.
Road Master
Joined: Jul 2016
Posts: 914
Likes: 245
Could be damage to the blue wire. It starts under the seat, I'd start where the wires go through the fender, be a pinch point. Also around the tail light connections especially if you've done anything sissy bar related, real easy to cut one by mistake with some of those.
If you dont see anything the multimeter is the way to go. If you dont have one you could jiggle things a little bit with the brake lever down and accessories on while wearing a glove. Not ideal but sometimes you see something. Possible to damage the core of the wire and not see it in the outside but that's pretty difficult to do.
Do any changes to it from the seat back?
If you dont see anything the multimeter is the way to go. If you dont have one you could jiggle things a little bit with the brake lever down and accessories on while wearing a glove. Not ideal but sometimes you see something. Possible to damage the core of the wire and not see it in the outside but that's pretty difficult to do.
Do any changes to it from the seat back?
Road Master
Joined: Jul 2016
Posts: 914
Likes: 245
If you have a new spare bulb handy might do a quick swap, unless you've checked it with a multimeter already.
It should be ruled out by now but it's cheap insurance to see if the bulbs were internally faulty before you go chasing wires. Think a common 1157 will work to test it but I'm not positive.
It should be ruled out by now but it's cheap insurance to see if the bulbs were internally faulty before you go chasing wires. Think a common 1157 will work to test it but I'm not positive.
Club Member
Joined: Dec 2014
Posts: 10,734
Likes: 3,755
From: SWFL
If you have a new spare bulb handy might do a quick swap, unless you've checked it with a multimeter already.
It should be ruled out by now but it's cheap insurance to see if the bulbs were internally faulty before you go chasing wires. Think a common 1157 will work to test it but I'm not positive.
It should be ruled out by now but it's cheap insurance to see if the bulbs were internally faulty before you go chasing wires. Think a common 1157 will work to test it but I'm not positive.
Road Warrior
Joined: Mar 2014
Posts: 1,623
Likes: 698
From: nowhere
Could the brake light already be on? Turn signals would work with the brake lights on. Pull a lense and see if both filaments are on. Bad front brake switch?
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Club Member
Joined: Dec 2014
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From: SWFL
THAT'S a BRILLIANT idea. Well done.
Road Warrior
Joined: Mar 2014
Posts: 1,623
Likes: 698
From: nowhere
LOL! Nice play on words! But no brilliance on my part!
4 hours I sat in the garage wondering why my brake lights didn't work.
Tried everything I knew to get them working. Pulled connectors, shook wiring harness, traced wires, changed bulbs, checked voltage...still nothing
Buddy walks in and tells me they seem to work fine.
I tell him he's crazy.
He reaches over and takes my helmet off of the right grip and the brake lights suddenly go out.
Duh!
4 hours I sat in the garage wondering why my brake lights didn't work.
Tried everything I knew to get them working. Pulled connectors, shook wiring harness, traced wires, changed bulbs, checked voltage...still nothing
Buddy walks in and tells me they seem to work fine.
I tell him he's crazy.
He reaches over and takes my helmet off of the right grip and the brake lights suddenly go out.
Duh!