Question about 1993 Harley Davidson FLSTF Fat boy

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Replace rear brake switch - 1993 Harley Davidson FLSTF Fat boy

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  • Harley Davidson Master
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What are you asking about it????

Posted on Oct 18, 2014

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Posted on Jan 02, 2017

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1 Answer

Where is front break switch located


Front brake light switch is located next to the hand lever for the brake. Look underneath and you should see two wires attached to a little black box. This is the mirco switch.

Rear brake switch is attached near the pivot point for the rear brake lever.
You should see two wires attached to a long cylindrical switch with a spring off one end. This is your brake light switch for the rear brakes. It may not need changing out, these are usually adjustable. As you screw them out, they make the brake light come on sooner, as you screw them in the take longer to come on.

Your front switch might need replacing, but another good idea is to check your wires for damage.

Nov 14, 2011 | Motorcycles

1 Answer

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
Steve

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

1 Answer

Need to know where the rear brake switch is on a 2006 manco matrix 50cc. i have the rear brake light staying on. need to repair or replace rear brake switch. please help. note. the auto select did not have...


Not familiar with this model, brake light switches work when the brake pedal is depressed, by means of a spring attached to the pedal at one end and the other end to the switch, should not be hard to find, clean and addjust switch apply small amount of thin oil to the switch piston and retry, often switch replacment is nessacary, aslo check and addust pedal height upwards will release the pressure of the switch alowing the light to distinguish,

May 15, 2011 | Malaguti Four XR Motorcycles

1 Answer

Brake light does not work when brake is engauged


You have two brake light switches, one for the rear brake and one for the front brake. If neither switch turns the brake light on, the first thing to check is the bulb. If the bulb is good, check the socket and the wiring to it.

If all that is good, find the rear brake master cylinder. Follow the metal tube coming out of it going to the rear brake. Underneath the bike, there is a pressure switch that turns on the rear brake light. Check to make sure the wires are connected and that one set of wires is "hot" when the ignition switch is in the "ON" position. If so, the switch is probably bad. Replace the switch. I have seen them check good with a meter but still not turn on the brake light. Work with the rear brake light switch first as it's the easiest and least expensive to fix. When you get that working, repost and I'll take you through replacing the front brake light switch. It's quite a bit more difficult to replace than the rear switch. I'm sure that procedure is in the archives as well because I've posted it a number of times.

Good Luck
Steve.

Apr 30, 2011 | Harley Davidson XLH Sportster 883 Hugger...

1 Answer

My running lights work but by break light wont


Check the bulb first. There are two filaments in the bulb, one for the brake light and one for the tail light. If the bulb is good, there are two switches that turn the brake light on. One is on the front brake lever and the other is a pressure switch in the metal brake line from the rear master cylinder. Work with the rear brake light switch first.

Find and follow the metal brake line coming from the rear brake master cylinder running back towards the rear brake. Underneath the bike's transmission, you'll find a tee fitting with a pressure switch in it. With the ignition switch turned on, one of the wires that are plugged onto the switch should have battery voltage on it. When you depress the rear brake pedal, both wires should have voltage on them. If not, replace the switch.

Once you get the rear brake light switch working, if the front brake light switch does not work, it must be replaced. To replace that switch, remove the two bolts that hold the right handlebar switch housing halves together. Loosen the throttle cable and idle cable adjustments. Lift the top switch housing half and remove the throttle sleeve. The front brake light switch is the small switch right in the front of the housing half. You must desolder the wires, replace the switch with a new one, and resolder the original wires to the new switch. Reassemble the throttle sleeve and switch housing halves. Adjust the throttle cable and idle cable. Check throttle for proper operation.

Good Luck
Steve

Mar 24, 2011 | Harley Davidson FXDWG Dyna Wide Glide...

2 Answers

I have a 2007 Heritage Softtail. Brake light does not work. I checked the fuses and replaced the taillight. Still does not work.What next?


You have two brake light switches on your bike, a front brake light switch in the right handlebar switch housing and a rear brake light switch under the bike. To check for operation of either or both of the switches, remove the brake light lense and bulb. Turn the ignition switch on and have someone hold the front brake and depress the rear brake pedal at the same time while you check the contacts in the socket for power to each contact. One contact will be the brake light contact, the other is the tail light contact. If you have power to both, you bulb or the tail light ground is bad.

If you only have power to one contact, have the person helping you release both brakes. The contact for the tail light should remain hot as long as the ignition switch is on.

To find the rear brake light switch, find the metal brake line coming out of the rear brake master cylinder and going towards the rear of the bike. Follow this line until you come to a tee fitting with the rear brake light pressure switch screwed into it. Simply screw the switch out and replace it with a new one.

The front switch is more difficult as you have to disassemble the right handlebar switch housing, remove the throttle sleeve and open the housing up. Remove the screw holding the old switch and desolder the wires from the switch. Install the new switch and resolder the wires. Reassemble the throttle assembly and the switch housing taking care not to pinch any wires and making sure the throttle works smoothly.

Good Luck
steve

Jan 21, 2011 | 2004 Harley Davidson FLSTC - FLSTCI...

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

Dec 21, 2010 | Harley Davidson XL 1200 C Sportster Custom...

1 Answer

Rear brake light not working


The brake light is turned on and off by either of two switches on your bike. The front brake lever has a switch located in the right handlebar switch housing. When you squeeze the lever, a pad on the lever moves forward allowing the switch button to move forward making contact which in turn switches the brake light on.

The rear brake lever operates a plunger inside the rear brake master cylinder that pressurizes the rear brake and rear brake hose and line. The rear brake line has a tee fitting in it along it's run with a pressure switch in the tee. Once the pressure on the line gets high enough, the switch turns on the brake light.

If your rear brake light switch is not working, check to make sure the wires are on the prongs of the switch. If they are, replace the switch. It simply screws out and a new one screws in. Most of the time you don't have to bleed the brakes as long as you don't move the rear brake pedal with the switch out. Check the rear brake for proper operation prior to riding the bike.

Good Luck
Steve

Jun 17, 2010 | 2008 Harley Davidson FLHRC Road King...

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
Steve

May 26, 2010 | 2000 Harley Davidson FLHRCI Road King...

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