brake light doesnt work?

[daoryder]

need help...when my bike is on the tail lights is on but when i use the front and rear brake the brake light doesnt light up...any info? its an aftermarket undertail

[grecco]

are you sure that all the wiring is correct?

is it an aftermarket undertail using a different taillight or does it use a stock taillight?

[daoryder]

are you sure that all the wiring is correct?

is it an aftermarket undertail using a different taillight or does it use a stock taillight?

after market everything...ok here it goes..theres 3 wires...one was hooked up as negative and one as positive..and there is another wire...i put the lights to the other wire and it lights up the other half of the led lights in the undertail...so theres power in each wire just dont know why when i hit the brake nothing lights up

[grecco]

you should use a multimeter and/or test light and test the wires and be sure what goes where.

[daoryder]

you should use a multimeter and/or test light and test the wires and be sure what goes where.

yea i wouldnt know how to do that...any more specific info

[daoryder]

i guess no one wants to help huh?

[Giddy Up]

On my '05, the white wire with a black stripe goes hot with either the front or rear brake on. Since your tailight works, the ground is good so check the connection on the white w/black stripe wire.

[daoryder]

On my '05, the white wire with a black stripe goes hot with either the front or rear brake on. Since your tailight works, the ground is good so check the connection on the white w/black stripe wire.

yea the ground is fine...and there is 2 other wires which both give power..but dont know which wire is the brake wire..what do u mean by the front or rear brake on?

[GeorgeC]

On my '05, the white wire with a black stripe goes hot with either the front or rear brake on. Since your tailight works, the ground is good so check the connection on the white w/black stripe wire.

yea the ground is fine...and there is 2 other wires which both give power..but dont know which wire is the brake wire..what do u mean by the front or rear brake on?

Just what he said...  When the front or rear brake is applied, the white wire w/blk. stripe will have +12v...  The brown wire is a constant +12V whenever the key is on (this is your running light).  The black wire with a white stripe is the ground wire.

[daoryder]

thanks guys just figured it out...had to do something with the new rear sets that i had installed...dude musta tighten that bolt/wire on the foot peg to tight