BRAKE LIGHT PROBLEM

Hello forum, have to goto the well of knowledge again.

My brake light is stuck on brake light or high. I have a kz1000 A2A. The tail light is a harley sportster. The tail light is a two wire with a ground.

Im using a two wire bango pressue switch for the rear...its new. The front is the normal two connection pressure switch. I cant seem to find the prob with this light. any help is appricated.

Spence

Most Kawasaki wiring for the brake/tail light, uses these color codes:

BRAKE/TAIL LIGHT Can be an # 1157 dual filament bulb
RED, Running or Tail Light.
BLUE,(sometimes with a Red stripe) Brake Light Circuit.
BLACK with YELLOW stripe, the ground circuit.

yep, purchased a new harnes and its red and blue with the black ground. the bulb looks ok....my harness wires are blue and brown with the brown having the current.

If the switches are sticking, the brake light will be on anytime power is in the circuit. To troubleshoot, disconnect one switch and see if the light stays on. If no change, then the switch that's not disconnected may be the problem. Also, use a multimeter on the disconnected switches to see if they are shorted internally.

pulled the front wires and it didnt help

well I un-plugged the front and rear signal switch wires and the brake light is still on.....?

Check the wiring to make sure you're not getting power from a source like a cross connected circuit(like where two or more wires have rubbed together). I'd suggest getting multimeter so you can trace back the wiring.

anything?

Is it a stock wiring harness?

What color is the wire from the harness that connects to the wire feeding the brake light bulb filament?

Stock harness has a blue wire from the harness that connects to a blue wire feeding the tail light bulb.

Stock harness has a red wire from the harness that connects to a red wire feeding the tail light bulb.

Stock harness has a black/yellow wire from the harness that connects to a black/yellow ground wire from the tail light bulb.

Good Fortune!

hello patton,

I bought the harness from Z1-Parts. my bike is a 78 A2A. I purchased that model harness and all works good but for the tail light. The tail light wires are red, blue and black/yellow

4TheKZ1000 wrote: well I un-plugged the front and rear signal switch wires and the brake light is still on.....?

Under the seat, over the rear fender, the blue wire from the harness seems to be wrongfully carrying positive voltage, continuously, as if it were a brown wire.

According to the wiring diagram in KZr's FILEBASE, the hot brown wire furnishes battery positive voltage to each brake switch.

From each brake switch, a blue wire runs to the brake light bulb filament. The blue wire isn't supposed to receive voltage from the brown wire except through operation of the brake light switch.

It would seem that for some unknown reason, the blue wire to the brake light bulb filament is continuously receiving brown wire voltage from somewhere else besides a brake switch.

One wild guess possibility of an erroneous brown-blue connection would be inside the ignition switch, where the brown and blue aren't supposed to connect; but perhaps there's a short inside the ignition switch from corrosion, loose wire strand, etc.

In any event, the blue wire to the brake light bulb filament isn't supposed to receive voltage from a brown wire except via a brake switch.

Maybe try swapping the wires from the harness to the rear light. This could correct possibility of continuous tail light voltage being wrongfully supplied to the brake light.

Good Fortune!

well I am running kz900 re-poped bar switches purchased from redline.

in the instrctions for the right hand switch......it said to connect the blue harness wire to brown harness wire using blue jumper wire provided. They say that there is a female brown 1 and 2 and either one can be used.

this might be where the power feed is comming from? what do you think, after what you said....why would they want me to take blue harness wire to 12v????