Does the bike have mechanical switch attached to the lever, or a pressure-operated switch? Have you tried disconnecting the wire to that switch?
brake light stuck on
alright folks 
got a 2019 mash 50. the brake light is permanently on.
because im an idiot, i tried to lift the bike by the handlebars when in a rush, and the area around the throttle made an ominous sounding snapping/clicking noise.
although the throttle seems fine, im wondering if ive broken something in the connection that leads to the front brake, which is in the same area?
see pics
![Bicycle handlebar Automotive tire Bicycle tire Bicycle accessory Vehicle]()
![Wheel Bicycle Tire Bicycle frame Bicycle handlebar]()
all help really appreciated
got a 2019 mash 50. the brake light is permanently on.
because im an idiot, i tried to lift the bike by the handlebars when in a rush, and the area around the throttle made an ominous sounding snapping/clicking noise.
although the throttle seems fine, im wondering if ive broken something in the connection that leads to the front brake, which is in the same area?
see pics
all help really appreciated
1 - 9 of 9 Posts
Look under your front brake lever for brake light switch. Looks something like this
![Automotive tire Font Auto part Composite material Engineering]()
See those two metal terminals at end? they have wire connectors plugged into them. You most likely bent terminals sideways, snapped off plastic divider separating them. So now the 2 wire connectors are touching. Use flat screwdriver tip to separate terminals & wires so they don't touch.
See those two metal terminals at end? they have wire connectors plugged into them. You most likely bent terminals sideways, snapped off plastic divider separating them. So now the 2 wire connectors are touching. Use flat screwdriver tip to separate terminals & wires so they don't touch.
thanks everyone so much for your replies, i didnt get an alert hence the late reply. I've attached 4 more pictures
@WintrSol i'm not sure what type of switch it has, have attached 2 pictures which show what happens when i pull the lever, and circled 2 places where it might activate a switch - the top one is behind a round rubber membrane and the other is a tiny black plastic square being pushed into some sort of housing - does that help at all?
@Traveller11 i dont suppose you know exactly where I'd find those adjusters please? around the lever and pedal somewhere?
@DannoXYZ I've had a look for that and can't see it, I'm assuming it's hidden inside a housing? Have attached a couple of pictures of what the lever looks like from underneath
thank you again
![Bicycle tire Automotive tire Motor vehicle Bicycle fork Bicycle accessory]()
![Bicycle tire Automotive tire Bicycle part Rim Bicycle fork]()
![Tire Automotive tire Bicycle part Rim Gas]()
![Automotive tire Gas Bumper Fender Fluid]()
@WintrSol i'm not sure what type of switch it has, have attached 2 pictures which show what happens when i pull the lever, and circled 2 places where it might activate a switch - the top one is behind a round rubber membrane and the other is a tiny black plastic square being pushed into some sort of housing - does that help at all?
@Traveller11 i dont suppose you know exactly where I'd find those adjusters please? around the lever and pedal somewhere?
@DannoXYZ I've had a look for that and can't see it, I'm assuming it's hidden inside a housing? Have attached a couple of pictures of what the lever looks like from underneath
thank you again
heh, heh... we've all had to learn that at one time or another. Good job tracking that down.!
Looks like someone's replaced your brake-lever, not factory unit. For reference, here's brake-light switch and wires going to it. Terminals on switch should have no-connection when lever not squeezed. Then have full-continuity (zero ohms) when lever squeezed.
![Automotive tire Bumper Bicycle part Bicycle tire Carbon]()
Also your brake-lever nut is upside-down and loose. Remove nut, flip it over and install so flat side is facing up. Tighten til lever stops moving, then unwind it about 1/2 turn so lever moves smoothly, but has no vertical wiggle.
![Automotive tire Bicycle part Electrical wiring Gas Wire]()
Looks like someone's replaced your brake-lever, not factory unit. For reference, here's brake-light switch and wires going to it. Terminals on switch should have no-connection when lever not squeezed. Then have full-continuity (zero ohms) when lever squeezed.
Also your brake-lever nut is upside-down and loose. Remove nut, flip it over and install so flat side is facing up. Tighten til lever stops moving, then unwind it about 1/2 turn so lever moves smoothly, but has no vertical wiggle.
1 - 9 of 9 Posts
