My brakes lights are not working on my 1993 Harley fatboy neither with front brake lever or back brake pedal
Check the wiring underneath the rear fender for damage especially if you are running a wider than stock rear tyre. The rear tyre comes in contact with the loom and wears through it. Also check for 12 volts at the rear brake light switch. I will assume that you have checked the bulb by replacement and also checked all fuses.
The first thing to check if no brake light front or back would be the brake light bulb.
Check the fuse
Check the bulb
Check the switches
Check wiring
SOURCE: Front braking is lost after changing lever.
the abs module needs to be bled via the hd digital technician 2 software; sorry need to take it to a dealer; can't fully bleed the module w/o it and it may interfere w/ warranty issues later
SOURCE: 82 harley sportster brake light
try starting with the bulb. brake light bulbs are dual fillament, meaning you have 2 bulbs in one basicly. if your brake side has blown then the tail light could still work. Or try checking the brake light switches, one on front brake and one on rear brake pedal. to test switches disconect wires and join them together with small bit of wire or paper clip. this will make the light come on meaning you have a bum switch.
if you have only been using the rear brake, that has an adjustable switch, may need to mess with it
SOURCE: How to adjust front brake lever on '06 hd road king?
This is by design. When you have new pads on the bike and a rotor within limits the lever has very limited travel before engaging.
As these parts wear the position of which the lever engages changes. Unless you know that at the last brake pad change the caliper was "centered" this could account for the travel and will result in premature wear on the components.
JP
SOURCE: have tail light working but brake light does not
Starting at the rear brake master cylinder, follow the metal line back towards the rear caliper. you will find a brake pressure switch in the line somewhere. Make sure all connections to this switch are secure.
If so, check the rear bulb for a blown filament. It has two filaments, one for the tail light and one for the brake light.
SOURCE: harley 1998 ultra wiring schematic
Sorry but I don't have a wiring diagram that I can send you but I may can offer a bit of help.
Your passing lamps are simply wired into a hot circuit somewhere. A lot of schematics don't show them because they are considered "add ons". They also may have a fuse inline with the "hot" wire. They have only one wire that connects them to the bike with the rest being inside the "light bar" itself. Find the wire coming out of the center of the "light bar" and trace it back to where it hooks up. Sorry but that's the best I can do on this one.
On your front brake light, there is a switch located inside your right hand switch housing where your throttle is located. It is a plunger type switch that is activated when you pull the front brake lever. A simple test of the switch is to loosen the bolts of the master cylinder and slide it towards the center of the handlebars. If the switch is good, the brake light will come on. If the switch is bad, it will not.
To get to the switch, you'll have to take the right hand switch housing apart. First, loosen the throttle cables at the adjusters and then remove the two bolts that hold the switch housing halves together. Carefully open up the switch housing. You will see the small switch in the front of the housing. You'll have to desolder the wires, replace the switch with a new one, and resolder the wires to the new switch.
Reassembly is the reverse of the disassembly. Make sure you slide the master cylinder all the way back against the switch housing or the brake light will stay on constantly. Readjust the throttle cables and check for proper operation. You don't want your throttle sticking.
Good Luck
Steve
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