hey guys my 07 street bob brake light isn't working the previous owner removed the handle bar controls and the turn signals he changed the brake light to a 3 wire brake light. There are two bulbs in the brake light one on top and one on bottom that is mainly for a license plate light. The brake light has three wires- one ground, one wire to the top bulb, and one wire to the bottom bulb. From a diagram I saw the front brake is the red/yellow wire, the rear brake is the orange/white wire, the running light is the blue wire and black is ground. I don't think the front brake will work without the handle bar controls,right? But the rear brake should still work so I hooked up the orange wire to the top bulb and hooked up the ground to test it and the light comes on as soon as the switch is on. I removed the connectors at the brake switch for the rear brake, the light still is always on, I took my volt meter to the orange wire and it has constant 12v when I turn on the switch. What do you guys think? What could be wrong here? And where should all of the wires go to have it wired correctly with this brake light. I'd imagine the bottom light should be constant and the top should be the running/ brake light

 

You need a factory service manual, it will have the correct wiring diagram, otherwise you are just creating an electrical monstrosity for the next owner.

The brake lamp is powered by the Red/Yellow wire that comes from the brake switch.

The Blue wire is running lamp.

Black is ground.

Orange/White wire is not used on the tail light except international models.

 

the red and yellow wire doesn't get power to it with or without hitting the brake

 

Go to the rear brake light switch, the orange/white wire should have power all the time, the red/yellow wire should have power when the brake pedal is pressed.

 

Have you checked the fuse, and the switch?

 

I looked at all the fuses and none looked bad. I took the connectors off the foot pedal switch and one has power all the time. I pressed the brake and checked the red/yellow wire at the brake light and it doesn't have power it reads 1 volt

 

Did you press it with the connectors on the rear brake switch off or connected?

 

I checked the red/y wire at the brake light with the connectors connected

 

I checked the red/y wire at the brake light with the connectors connected

 

You check the front brake light switch? R/Y are the wires coming from the brake light switches and the O/W are the power supply wires going to the switches. There is a tie point in the harness combining the front/rear switches to the rear light and the turn signal switches. O/W on the tail is a hot wire specifically there for the tail light of the HDI models, but it does indeed supply power for quite a bit of the lighting and comes off of the Acessories fuse in the fuse box. Maybe it is at the tie point. Do you get power at the R/Y when you press the front brake?