Anyone had their front brake light switch go?

Jokeshopbeard · Aug 1, 2016

A guy in a car just pulled up next to me and mentioned it to me. Upon pulling over and testing I find that pulling the front brake lever no longer activates the brake light.

The rear brake still activates it properly though.

So, before I give myself a heart attack looking at the extortionate price of a replacement switch, can anyone let me know if they've experienced this please?

dragoontwo · Aug 1, 2016

Have you hit the switch with a meter yet?

monocog007 · Aug 2, 2016

I'd be taking the levers off and spraying some electrical contact cleaner on the switch, while actuating it with a screwdriver or something. If you can hear/see the switch actuating but your brake light still isnt working, it might be time for a new switch. There are reports around here of similar issues with the clutch sensor.

Jokeshopbeard · Aug 2, 2016

dragoontwo said:
Have you hit the switch with a meter yet?

Not yet man. TBH, I wouldn't know exactly how to test. I've got a good meter but am a bit of a novice with it.

Would you mind describing briefly how you'd test please?

dragoontwo · Aug 2, 2016

Jokeshopbeard said:
Not yet man. TBH, I wouldn't know exactly how to test. I've got a good meter but am a bit of a novice with it.

Would you mind describing briefly how you'd test please?

Sure. It's just a simple microswitch. On your meter you will either check for resistance, or continuity. If using resistance, you should have little resistance in one position(lower numbers are better). In the other position, you should have either a lot of resistance(think Megohms) or an open circuit(OL).

If checking continuity, one position will beep(if your meter has a beep function). The other position will be silent.

After dinner, I'll check mine for you.

dragoontwo · Aug 2, 2016

You'll need to pull the front cover and headlight to access the plug.

No brake = OL or open circuit
Brake = .3 ohms or closed circuit

Hope this helps.

Jokeshopbeard · Aug 8, 2016

Thank you so much for the help with this dragoontwo, really appreciate it man. So I ran a continuity test on the switch this weekend, seems like it's working absolutely fine.

Which leaves me hoping that it's something to do with the aftermarket rear light I have (it's one of the 'integrated' rear lights, which has the flashers built into it), cause if it's not that, I'm ****** if I know where to start looking next.

The reason I suspect it may be a fault with the light (already have a replacement on hand) is the right hand built in flasher has started to stop blinking after 5 times.

However I wouldn't have thought that the input to the brake light was any different whether the signal is coming from front or rear...

Really hoping I'm not gonna have to go digging about in my loom again if the replacement light doesn't fix it - that was a real PITA...

dragoontwo · Aug 9, 2016

Can you plug the original brake light in just to test?

Jokeshopbeard · Aug 9, 2016

yeah, will have a blast with it this weekend. Thanks again man.

Jokeshopbeard · Nov 16, 2016

Digging this one up from the dirt again, christ, I must be the unluckiest bastard here with things that've gone wrong with my Hyper.

So I checked the switch, no issue there. I also put the stock light on to test, same result. So given my lack of spare time I've just made sure to use my rear brake a lot more for the benefit of those behind me (since the rear brake switch is still good).

So now I'm left with the unenviable job of tracing the fault back through the loom. Since I've already found one broken wire there I'm hoping to find another.

Just on the off chance anyone else has more helpful tips or tricks (thanks to those that have given them already) I thought I'd bring this thread back up top.

beef tits · Nov 16, 2016

All my older Ducati's have had little issues like this at 10,000 miles or less. Sorry dude, it's just a Duc.

Jokeshopbeard · Nov 16, 2016

Yeah, I hear on good account never to buy a Duc at less than 15k. Didn't know that when I got this though, first time with a Duc for me. I'm at 18k now, so hopefully once all this **** is sorted, I'll be able to have some worry free riding.

Mind you, I might have to sell up in not long. I'm trying everything I can to avoid it and take it to Australia when I migrate next year, but money is a ******. It'd be sods law that I get forced to sell *just* as I manage to put everything right...

Anyone had their front brake light switch go?

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