Question about 2000 Harley Davidson FLHTCUI Electra Glide Ultra Classic

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Brake lights do not work on rear brake or front brake

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Start with the simple stuff first, check the bulb to see if the filament is blown. It uses a standard 1157 bulb with two filaments in it. If the bulb appears to be alright. Check the contacts down inside the socket to make sure they're clean and the springs isn't broken under it. Use a volt meter to check and see if there is voltage on both pins with the headlight on and the brake pedal depressed. The rear brake light switch is located underneath the bike. Follow the metal line that comes out of the rear brake master cylinder to find the "tee" fitting with the pressure switch in it. Check the wires that plug onto the switch.

Good Luck
Steve

Posted on Mar 21, 2011

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1 Answer

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Rear brake light will not work when brake pedal is applied, both front and rear brakes run through same sensor front brake applies rear light, but rear brake pedal doesnt. where is the problem?


It sounds like the rear brake pressure switch is bad. The wires for the front brake light switch are wired in parallel to the this switch. Replace the pressure switch in the metal brake line coming from the rear brake master cylinder going to the rear brake caliper.

Good Luck
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Aug 21, 2011 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

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Your bike is equipped with two brake light switch, either of which should cause the brake light to come on when activated. The front brake light switch is in the right handlebar switch housing and it has an activation pin that sticks out of the switch housing towards the front brake lever. A tab on the front brake lever operates the switch. When the tab on the lever moves away from the switch housing, the pin comes out of the switch housing and turns on the brake light. The rear brake light switch is a pressure switch located in the metal brake line that comes out of the rear brake master cylinder and goes towards the rear brake. Just follow the metal from the rear master cylinder towards the rear brake and you'll find it.

Good Luck
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1 Answer

My brake light is not working when i apply rear brake. works fine with front brake.


If your rear brake light is not working but the front is, this means the pressure switch for the rear brake light is bad. Find the rear brake master cylinder and follow the metal line out of the master cylinder as it goes back towards the rear wheel. In the line, you'll find a "tee" fitting with a pressure switch screwed into it. Make sure all the wires are on the switch. If so, the switch itself may be bad. Replace the switch.

Good Luck
Steve

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1 Answer

Rear brake light not workiing


There are two brake light switches. One is in the right handlebar switch housing. This is front brake light switch and is a simple push button type switch actuated by the front brake lever.

The other switch is a pressure switch and it is located in a Tee usually somewhere under the bike near the rear of the transmission. Follow the metal tube coming out of the rear of the master cylinder. It will go back towards the rear brake. Somewhere in that line there will be a tee with the pressure switch in it. If you jumper across this switch, the brake light should work. If it does work when you do this but not work when you depress the rear brake signal, replace the rear brake light switch.

Good luck
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No rear brakes, pedal goes all the way down and brake lights don't work, but they work off the fronts


You need to check you rear brake master cylinder. Something is wrong with this as your rear brake is not working. The brake light for the rear brake is activated by a pressure switch whereas your front brake light is activated by an normal push/release switch. Fix your rear brake problem and the brake light problem will be repaired as well.

It may be time to rebuild your rear brake master cylinder.

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