I have an issue with the brake light not working on my Harley davidson FXDL, neither the front hand brake nor the foot pedal when pressed is the brake light coming on .. both switches can't go bad at the same time can they, however I stopped by a local motorcycle shop and was advised the 94 Harley FXDL has a fuse box under the side cover but after the left side cover was removed this is no fuse bux and the right side covers the battery... can anyone help to advise on this ..
Thanks
Larry
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Probably a bulb/ rear brake switch combination. If your front brake switch is working, then half of the bulb is working. No taillight issue, probably a bulb. No rear brake light, probably the rear brake switch. Located on the lower right rear of the frame, behind the exhaust. Check for power on the orange/white wire at switch. If you have that then check for power on the other terminal of the switch while pushing on the pedal. The rear brake switch is hydraulically operated so you must have adequate pressure to activate it.
Hi, Anonymous before diagnosing any brake light issue always check the bulb and fuse first for integrity a brake light staying on is usually caused by the front brake light switch, which is mechanical, not disengaging. On early models moving the throttle control housing closer to the front brake master cylinder is the main fix. On late models, the switch gets tweaked and needs to be realigned. A brake light that does not come on when the brake lever is applied can be caused by a faulty switch or no continuity in the wiring at the switch. The rear brake light switch is hydraulic and it is extremely rare to malfunction in a closed circuit condition causing the brake light to stay on. Usually, rear brake light switch issues are caused by no brake pedal free play or a sticky rear master cylinder piston. A brake light that does not come on when the rear brake pedal is depressed can be caused by a faulty switch, air contamination in the brake line, or no continuity in the wiring at the switch. Finally, most tail light wiring harnesses run under the rear fender held in place by spot-welded clips. Worn out rear shocks or lowered suspension can bottom out causing the rear tire to come in contact with the wiring harness, rubbing the insulation off, exposing the bare metal inner core, allowing it to break or short out.
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I take it it does not work foot or hand control. look for your brake light switch right side of frame rail usually a goldish color or silver color. it has two plug in connectors. Unplug and put a test light to them. apply either brake. If the light comes on then you have a bad brake switch. replace it. if you have foot brake and no hand brake light then it would most likely be the brake nipple in the hand switch. but you did not say so I assume no brakes foot or hand.
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