Question about Harley Davidson FXDWG Dyna Wide Glide Motorcycles
No rear lights at all except brake light when lever or pedal activated. just had bike detailed
Check under your rear fender and make sure your turn signal wires aren't exposed or rubbing against metal that can cause lots of problems
Posted on Apr 13, 2014
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Posted on Jan 02, 2017
SOURCE: Brake lights
The taillight should be on at all times. The brakelight should come on when the front or rear brakes are applied. Start by disconnecting the front brake light switch then the rear to see which switch is broken. Also check the bulbs. I have seen them short out internally. The filament inside the bulb break and contacts the other circuit.
Posted on Nov 20, 2008
Offhand, in most bikes, the tailight and the brake light are integrated in a single bulb with a common ground. This would translate then into a 3wire arrangement. The brighter of the filaments is for the brake while the dimmer of the two is for the park/running/tail light. To my knowledge, either the tail or brake lights do not use a relay, they are wired straightforward. Your described problem all points to a mis-connection, possibly the ground wire. The easiest approach would be to identify the ground wire. With ignition switch off, all light switches off, identify the ground wire with the use of a continuity tester (VOM/DVM). Disconnect the wires to the harness, on the harness, it would be the wire with nearly 0 resistance against any exposed metal or the chassis. On the wires going to the tailight assy, it wold be the wire that measures 0 ohms to the metal socket/housing of the bulb.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.
Posted on Nov 21, 2008
You should have two filaments in the reat taillight lamp, one for tail light and one for brake light. You are not confusing these filaments/functions are you?
What you seem to be saying to me is that you have a lamp that had no tail light filament (burned out) but does have a brake light filament still intact.
Remove the light and check it visually and/or with a contunity tester.
I hope this helps you ...
If I misunderstood your question, please ask me again
Posted on Oct 02, 2009
It mught be the bulb that needs replacing or else check the wiring to the bulb for continuity in case there is a broken or snapped bit.If you have a voltmeter then you can test the voltage reading at the point of contact..Sometimes rust builds up and a simple cleaning would solve this.Hope this helps.
Posted on Feb 16, 2010
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.
Posted on Feb 28, 2010
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