Ducati Monster Forum

Moto Board => Tech => Topic started by: 118811 on January 20, 2010, 09:12:44 AM

Title: "HELP"..brake light won't go off!!!! 98' M900
Post by: 118811 on January 20, 2010, 09:12:44 AM
I need your help. [bow_down]

My 98' M900...the brake light won't go off, stays "bright" whenever the key is in the ignition, or engine started.

Note...I don't know if there is any connection, but I am about to replace my rear brake pads, they are very low...is there any switch that would cause this?

Thanks in advance for any ideas !!!
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: Spidey on January 20, 2010, 09:18:49 AM
Check the microswitch attached to your front brake lever.  If it popped off, your brake light will stay bright. 
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 118811 on January 20, 2010, 09:28:45 AM
Quote from: Spidey on January 20, 2010, 09:18:49 AM
Check the microswitch attached to your front brake lever.  If it popped off, your brake light will stay bright. 

Is the switch attached to the underside of the brakelines,( black line beneath ) the lever...it seems intact?
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 2001cromo on January 20, 2010, 10:15:29 AM
there's a switch for each front and rear brake.

As others have suggested, try testing those first.

Specifically, try disconnecting one and then test the other.... you'll be able to narrow down which one is getting stuck on.
Locate the 'micro switch' and then trace those 2 wires back and un plug them. Only unplug one at a time so you can still test the other...

I'm betting it's the rear.

GL  [thumbsup]
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 118811 on January 20, 2010, 11:09:07 AM
Quote from: 2001cromo on January 20, 2010, 10:15:29 AM
there's a switch for each front and rear brake.

As others have suggested, try testing those first.

Specifically, try disconnecting one and then test the other.... you'll be able to narrow down which one is getting stuck on.
Locate the 'micro switch' and then trace those 2 wires back and un plug them. Only unplug one at a time so you can still test the other...

I'm betting it's the rear.

Thanks for the advice...I am going to try & figure it out tomorrow
Q   where is the rear micro switch located!!? [roll]
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 2001cromo on January 20, 2010, 12:28:34 PM
look just behind (on the inside) the rearsets where the rear brake pedal is. You'll see it. It's the only electrical piece there. Then trace the wires up the side a little bit and you'll see where it plugs together. Just disconnect that to test.
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: erkishhorde on January 20, 2010, 12:58:46 PM
It could also just be corroded contacts at the bulb.
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: Ddan on January 20, 2010, 01:24:17 PM
Quote from: erkishhorde on January 20, 2010, 12:58:46 PM
It could also just be corroded contacts at the bulb.
+1, or you've got the bulb in reversed, have you changed it lately?
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: ScottRNelson on January 20, 2010, 01:42:57 PM
Quote from: Dan on January 20, 2010, 01:24:17 PM
+1, or you've got the bulb in reversed, have you changed it lately?
The mid-90's Monsters were easy to insert the bulbs backwards in.  I've managed to do it more than once, even knowing about the problem.
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 118811 on January 20, 2010, 02:34:23 PM
Quote from: ScottRNelson on January 20, 2010, 01:42:57 PM
The mid-90's Monsters were easy to insert the bulbs backwards in.  I've managed to do it more than once, even knowing about the problem.

I did change the bulb, 3 months back & has worked fine til yesterday
thanks for all the advice I will look into it tomorrow [thumbsup]
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 118811 on January 21, 2010, 11:47:04 AM
Quote from: 118811 on January 20, 2010, 02:34:23 PM
I did change the bulb, 3 months back & has worked fine til yesterday
thanks for all the advice I will look into it tomorrow [thumbsup]

Well...it was a simple bulb adjustment & works now!! [wine]

Thanks All
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: ScottRNelson on January 21, 2010, 11:50:39 AM
Quote from: 118811 on January 21, 2010, 11:47:04 AM
Well...it was a simple bulb adjustment & works now!! [wine]
So you had put it in backwards?
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: 118811 on January 21, 2010, 12:43:06 PM
Quote from: ScottRNelson on January 21, 2010, 11:50:39 AM
So you had put it in backwards?

Maybe?   

It worked fine for 3-4 months [roll]
Title: Re: "HELP"..brake light won't go off!!!! 98' M900
Post by: ducpainter on January 21, 2010, 05:15:34 PM
Quote from: 118811 on January 21, 2010, 12:43:06 PM
Maybe?   

It worked fine for 3-4 months [roll]
[laugh]