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CrazyMotorcycleGuy, pnbell
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Who Knows Ducati Electrical?
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Who Knows Ducati Electrical? - June 1, 2018, 11:57 AM

Finally Picked up a 916, managed to find an original 95 Ducati 916 S1 up in Baltimore that had been sitting for sometime.
Its a dream bike I have wanted for some time, and sold the BMW pretty much the moment I knew I was able to get it.

Its been tracked, which is fine by me as I plan on doing the same, but it had sat for some time... like 2 or three years untouched.

I have all the services now up to date, new plugs, belts, fluids, filters, cleaned the tank ect. But am now dealing with electrical issues.

Installed a new battery and it was dead in 2 days, have a short somewhere and found that the terminals were getting real hot while cranking over.

The previous owner "upgraded" the lights to HIDs and possible a couple other electrical changes and ran a lot of lines back to the battery. Literally now I have 6 positive and 6 negative connections... I am so confused when it comes to electrical and there are a bunch of fuses and well crap I have no idea what it does now on this bike.

Anyone know a person/shop/ dealer in the between DC and Annapolis MD that will work on these older bikes and has a good electrical understanding? I really just want to know ever where to start with diagnosing the issues.

I want to take of everything that is not stock as far as electrical off but don't even know where to start.

I found one place but they are already back logged for a few weeks before they can even look at it. Rather not have a month of down time this season if I don't need to.

Any advice would be helpful, and thanks in advance.
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June 1, 2018, 12:00 PM

Broke rule number one with forums... forgot photos.

Ducati Reduced.jpg
Ducati Resized 2.jpg
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June 1, 2018, 12:05 PM

and this is some of the wiring that I don't know where to start with =(
20180512_161836.jpg
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June 1, 2018, 12:44 PM

I'll start with a simple, dumb, yet important question, because its good to rule out the easy stuff first.

- Is the ignition in "Park"?

On my Ducati 900ss the ignition goes (P, Lock, Off, On) so when you go to lock the handle bars you can easily go one step too far and leave the parking lights on. Did it twice, killing the battery both times... destroyed a basically new Lithium battery (@#$@!)

.


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June 1, 2018, 01:01 PM

I believe, I have always turned it off to just "off" I don't lock it so it should never go past the lock portion.

Furthermore, It had a slow crank on a new battery, I was told this is an issue with a lot of these older duc's.. and was advised to replace the main leads with upgraded (ie. new thicker) cables which I ordered from a Ducati part retailer, they just came in this week and I have not installed them yet. These are three main leads. Nothing regarding the light/aftermarket mess.

Before doing anything I tried a "hand test" where I did some cranking at start up and immediately several of the wires got very hot, to the point I am surprised they did not melt. There is, I don't want to say definitely as I am not sure, but very likely a case of some grounding or wiring issues in this aftermarket light mess.
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June 1, 2018, 05:35 PM

Go to FasterTwins or DucPond


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June 1, 2018, 05:55 PM

Quote:
Originally Posted by Sal_the_man View Post
Go to FasterTwins or DucPond

Thanks I've heard good things about Ducpond, but i was trying to stay in the state of maryland if i could, thats a 4+ hour round trip for me.
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Stop light racer...
 
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June 8, 2018, 02:43 AM

Do you have a multimeter/voltmeter? (First step to electrical troubleshooting)

If so you could take a reading, wait an hour, or a day, and then take another reading. How much voltage has the battery lost?

Then you could start by disconnecting the aftermarket lights from the battery and do the same test. Still losing voltage?

You can continue testing in this fashion by pulling fuses until you locate the circuit which stops the draw. Then you have a direction and a set of wires to follow.

Keep us posted.


- Norway Daily, 90' VFR750, V4 Touring Beast
- USA Daily, 08' Versys - Urban Assault vehicle
- Toy, 02' Ducati 900ss - Loud and angry noises
- Toy, 89' FZR600 - Raw Inline Deathbox
- Project, 91' CB250 - Goal: lightweight city bike
- Project, 79' CB350 - Finally runs, now to finish

- Sold, Red 94' VS800 - Loud as F@*$
* R.I.P. Blue 06' SV650, murdered by DC!
* R.I.P. Black 98' FZR600, murdered by DC!
- Sold, Red 81' GS650
- Sold, Black 81' CM400T
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June 8, 2018, 01:48 PM

RnR, Ducpond, Faster Twins all would treat you right. I hate electrical shit. It makes me angry lol. Especially on the newer bikes. If you're going to turn this into a track bike only I'd recommend you taking everything off and just getting rid of all unnecessary wires. If it's also going to be a street bike go to one of the shops above and get it sorted out.


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June 8, 2018, 04:45 PM

MAKE SURE you figure this out and don't insist on starting it with a weak battery: it damages the surface of the flywheel where the starter gear grabs onto it and it's just NO BUENO and expensive to fix properly.


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June 9, 2018, 07:57 PM

@pnbell, i have a multimeter and will try to run a couple test as soon as I get some time.


@Turkishexpress, when I used to live in ashburn i had used RnR anf they are definitely good people and got me a lot of work done at a good price... however its a bit to much of a hike for me now... just dont have the time...


I did find a shop in south baltimore I am going to try to get it to next week If i cant figure it outmyself.


@leoallafila, copy that, batterys off the bike right now as I wait to have time to dig through this.


Thanks guys.

Last edited by Cinko; June 9, 2018 at 07:59 PM..
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June 13, 2018, 10:19 PM

pull all that shit off. and the hids. all of it.
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June 15, 2018, 05:58 AM

Quote:
Originally Posted by justdance View Post
pull all that shit off. and the hids. all of it.
Dropped it off at the dealership on Wednesday, bought upgraded terminal connections and brought them in, having them strip it down and start by just putting the on the new cables and work out which after market cable is giving issues.

Personally I don't need lights or anything as I registered it historic... would like to have them, but doesn't really affect my plans if they are disconnected.
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