Ducati Monster Forum

Hey guys,
I installed my new Sequential LED tail light from motodynamics. Pretty straight forward install. The brake light works fine, the turn signals only work if the bike is actually running.  The problem is. I started the bike and checked to make sure the brake and the turn signals worked..both did so I took her out for a spin. Came back about 30min later and when I checked the rear brake lights it was not working correctly.  You could see the light was on but when I would turn the signals on the whole light would just pulse with the turn signals in the front.  "Signals in the front a not LED. just standard." You could not see the turn signal at all....the brake light still worked with the three pulses and then the solid brake light.....I am a bit stumped.  What should i be looking for any ideas?  

98 M750

Not sure what bike you have, but i did have a problem with my s2r 1000 running the motodynamics light. First off you may want to check your fuse, the instructions they gave me had me wire the wrong color wire to one another and i think that blew the fuse. Tried different set up regarding the wiring and sure enough that was the case. I don't remember which wire it was, its been a awhile since i installed the light.

it came with isntruction manuals?

maybe the flashing device is broken.  or disconnected or loose. it just blinks like a normal light, not sequentially?

Did you have to do any wiring, or did it have a connector that you just plug into your wiring harness?
Sounds like loose wires, or it is possible that the flasher was defective and broke. Check connections if nothing seems loose, I'd give MD a call/email and see what they say.

I have the older generation without the extra brake flash, and had to wire it myself. But no problems so far (only like 50 miles though)

Edit: also, did your turn signals only work when the engine is running before the install? My 2001 works with the engine off.

Yes it did come with the instruction sheet. I have been over the instructions  probably 10 times. They are very to the point and simple. There really is no was you can screw it up. 
When I first started the bike the lights worked sequentially. After I got back from my short ride they did not work any longer.  The brake light worked as it should, but there were no turn signals.

Yes it did come with the harness then I just plug and play my connections into there harness...pretty straight forward stuff.
No the only thing that would work with the bike off is the brake light.....the front turn signals work when the bike is off but not the rears.
As far as a loose wire is concerned I want to say no....just because I have been over it with a fine tooth comb....I think I will give motodynamic a shout..

Yeah contact them, if you bought it new, I would guess they would replace it. It sounds like a faulty assembly. Also one more question, does your front signals flash at normal rates or extra fast now that the rears aren't working?

thanks to this thread (sorry to hear your problems) I contacted them and was told the M696/M1100 version should be out this summer

good luck with the fix, sorry for the thread jack (is this a thread jack?)
 8)

Yeah its brand new. Bought it at the end of April and only but 50 miles on the bike so far this season....waiting on parts from the mother ship.  As far as the signals in front. They flash like normal...not like when there is a bulb out.

Here is what I got from MotoDynamic...

"Let's try some troubleshooting and narrow down the problem. You said when the turns signals are on, they stop working after some time and take out the brake lights with it. Temporarily disconnect the turn signals by removing the subharness, then run the signals and see if the same thing happens. Hit the brakes whiles the turn signals are on just to make sure the brakes don't go out. Please report back your findings.

I am guessing the subharness may be at fault here. If so we may need to replace that for you."

Pretty quick response as well...Have yet to try this will test it out today.

I'm also installing a Motodynamics brake light. I have one question for all reading :

What the hell do you do with the license plate light?

The brakelight has what appears to be an integrated light to illuminate the plate ( either was I don't care)... I dont need the factory one

Throw it away  [thumbsup] The one it comes with sufficient and better in fact.

So do you just cut the wires and seal 'em off?

my motodynamic does not come iwth a license palte light...

Yup... Just checked as i bottoned up the ol' tail chop and new light... NO license plate light.

Still wanna get rid of the bulb though.... i have nowhere to mount it unless I drill a hole in the license plate bracket... which i don't wanna do

dump it and buy an LED one from ebay. a guy named joe-florida makes some good ones for cheeeppppp.

I just velcro mine onto the bottom of the tail light.

Motodynamics is sending me another wiring harness.  I will update when it comes in.

+1 I ordered same one on He Man's reccomendation. I got the white one and it was an easy 5 min install, showed up 3 days after I ordered it and Joe is a super great seller

just ordered this, hopefully i wont have this problem.

Installed the new module and I still have the same issue.  The weird thing is I turned on the bike today and it worked fine. I had the bike warming up and the turn signals running the whole time....engaged the brakes and was switching the turn signals all worked just fine....turned her off and back on and the turn signals would not work.  I even bought a new switch relay. I have done everything I can think of.  I am sending the light back to motodynamics.  I am thinking it might be the light that is the issue..

Wait!!

I'm an asshole, I should have read the whole thread. So just to be cleaer (for my own sake) the turn signals will work while the bike is running, but not while the power is just turned to "on" is that correct?
If it is I had the same problem.
The solution - Per Motodynamic is - that's the way it is.

Apparently some  bikes have that issue, (something to that effect is written on the little "instruction sheet" it comes with) and they need more juice for the signals than the bike gives when just turned to "on" ....


If that's not what you were talking about then I just wasted you're time......you will never get that time back, and good luck making up for it by speeding up other things you were planning to do at a normal pace   [cheeky]

Yeah I read that as well on there FAQ section of there website.  If I turn the key to the
"on" position the brake light works but the signals do not. When the bike is actually running the signals work, but only for a period of time.  And I cant actually say how long they work while the bike is  running.

And that is my issue.  I had the bike running today for 10 minutes in the garage with the signals engaged. I wanted to see if they just stopped working but it was fine.  I turned off the bike. Started right back up......no turn signals.  Its whacky   [bang]

thats odd....i had the same issue and i never had an issue after that first time.

I freaked out though when i went to check the signals. i thought i screwed up somethin in the electrical system.  Sorry you're having so much trouble. after that first scare I havent had any issues

As I am thinking about this...I did replace my old front two wire signals with a new set of three wire non led signals.  I only used the two wires that made the signals work and just taped off the third wire.....Could this be a possible issue?  Im grasping at straws here. 

okay, knock on wood, my is working fine now...apparently a low battery won't help the situation, with all of the checking and work I have done I ran the battery down, so after a charge all was well, hope everyone else has some better luck!


later,
Erick

I've got two.........on two different monsters.........they don't work well when the bike's aren't running. They work fine when the bikes are running. It says right on the one page instructions that this could be an issue. It took me a day and a half of screwing around with the bikes to finally find that one line on the instructions.


Instructions are good.

ditto for me....but i actually called them  [bang]