Stupid dumb tc bros brake switch

[Sweatybuns901]

I’m sure this topic has been destroyed over time but I’m having the hardest time figuring out how to wire an led brake/tail light with this dinky little brake switch from tc bros.

 

[jpdevol]

The brake switch is in series with a positive lead to the tailight ; so power in to one screw on switch and power out from the other screw, then on to tailight. (If using a Motogadget M-Unit it's different)

 

[Sweatybuns901]

The brake switch is in series with a positive lead to the tailight ; so power in to one screw on switch and power out from the other screw, then on to tailight. (If using a Motogadget M-Unit it's different)
View attachment 240208

What if I have 3 wires coming from tail light?

 

[jpdevol]

One wire will be a running light that carries power when lights are switched on (taillight), one will be switched power from the brake switch (brake light) and one will be ground. You can test which is which on the battery - guess: black = ground, blue = taillight, red = brake light

 

[jpdevol]

Are you installing this on a bike with a standard Yamaha (year model) wiring harness?

 

[gggGary]

One wire will be a running light that carries power when lights are switched on (taillight), one will be switched power from the brake switch (brake light) and one will be ground. You can test which is which on the battery - guess: black = ground, blue = taillight, red = brake light