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tail/brake light always on

Lorenzo

Lorenzo

Forum Mentor
Past Site Supporter
When the key is in the ON position, both the filaments of the bilux are on.
If I turn the key on the PARK pos only the tail light is on, braking as no effect, with both the key pos.

I removed and inspected the brake pedal switch, but it seems to be mecanically sound.

In case there isn't continuity (I'll check later) in the switch wires, shouldn't the stop light be off?

Some wire shorted?

Thanks
 
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Check the front brake switch. Be careful when you remove the screws, there are small parts there, some of them are spring-loaded.

Start by just loosening the two screws a bit, then try to slide the switch to adjust it. If that does not work, remove the cover, but be ready to catch the small parts. With a good cleaning and a little bit of dielectric grease, you might restore normal operation. If replacement is necessary, it's not all that expensive. Here in the USA, we can get a replacement switch assembly for about $10.

.
 
The foot pedal switch is faulty, and the lever one is faltering; but as soon as I removed the latter, the light went off.

Both of them will have to be replaced.

Thanks Steve
 
Adjust them before you buy new ones!!!! Put the handle bar one back together and leave the screws just a tad loose. When you set the brown circuir board in be sure the "raised bump" thats on it is to facing to the end of the bars. This bump lift the U shaped contact off the two rail to break the circuit..and the light goes out. Follow me??

Anyway, once the front assembly is together, unplug the wires from the rear switch so your just doing one switch at a time.
Now use a thin blade and move the brown waffle board one way or the other under the black cover till the brake light comes on. Then move it ever so slightly till it goes out and snug down the cover screws and check the lever for a brake light. May take afew tries till you have the lever switch adjusted right.

Once the lever is done, plug the rear switch back in. Youll see the 14 MM nuts that hold it into the bracket and youll notice the assembly is threaded all the way down. Loosen the nuts and twist the switch till your getting a brake light off the switch. Turn it the other way till the light goes out and snug the nuts. Try the brake pedal and adjust if need be.
 
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Hi Chuck, first of all, thanks for the fault finding checks;

The little prong inside the front lever brake switch, is 1,5mm (through normal wear) that's why I said is faltering, it seem the prong is not engaged by the recess on the backside of the lever.

I can see the stop light working when I flick the lever on the contact, but it's just not consistent and, when riding, you wouldn't have a clue on it's state (on or off) so I think I'll replace it.

I have took apart and reassebled the plunger on the pedal switch, and it's alarmingly simple, a rod, a spring and two spaced apart contact rings;
even though, tested with a meter on the continuity range, there is no beep when the probes touch the two contacts and the plunger is pulled. Wires are fine (there is continuity from one end to the other, in both.

How can it possibly develop a fault?
 
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Bump Chuck. I didn't do my lever switch right and now I know why.

My mind just soars over the simple sometimes and I look like a :p
 
I have replaced that worn down bump before with some epoxy. I drilled a hole thru the board and added some 5 minute epoxy.

i mixed up the epoxy and let it sit on the cardboard till it started getting to the consistency of bubble gum. Then rolled a dab up into a tube with my fingers and pressed it into the drilled hole and then let it set up good. Then the jewlers files to shape it. The bump lifts the contact off the bridge when the lever is relaxed..pull the lever and the contact slips off the bump and sets across the bars and makes the completed circuit. I have gotten bike where the PO had placed the baoard in upside down also, so be sure the bars are facing the U shaped contact thing in the lever side of the assembly.
 
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