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Voltage regulator 900ie

Please note that Roy at Italsport has some stock of the original regulator rectifier units and this is by far the better way to go but if you prefer to use your local supplier..  here is an alternative

I voltage regulator recently blew, only to find out that the OEM part is discontinued ....

but do not despair I have just fitted a newer type of Ducati regulator. It seems to work  well.

I received the advice from Italsport in Bury , Manchester. (+44
(0)161 7976124. They are the outfit that squeezed the 916 into a Fant
and called it a Ducatifant.

The following part numbers should help you. They were on the packaging I received.

Description Model Part number
 

Description Model of Bike Part Number
Wiring Harness 748-916/97 51011071C
Adaptor Plate 748R/00 748-996B/01 82711561A
Regulator SH673-12 996 B.P/00 54040131A


The plate has to be trimmed to fit onto the triangular original plate, I
found this easy, with a junior hacksaw and a file to smooth things off.
The whole modification to the plate took a few minutes. The adaptor
cable plugs straight into the original harness and matches the new
regulator, there is even a little blanking plug to make the unused pair
of wires safe, although a little tape would have sufficed. The only
difference is the telltale light on the dash stops working but I thought
a sweet starting motor was more important.

As you can see quite a mix of models but it does the job.

For those who are still using two headlights on dip remember the alternator is only rated at 300w so either 60/35W bulbs should be used or like I have done disconnect the near side dip wire. see Poor Headlight Performance below.
 

posted by Paul Kristensen

Poor Starting

When I first had my 900ie the turnover speed at start was slow. This resulted in poor starting when cold. After some help from the eab serverlists I changed the cable from the solenoid to the starter with some cable used for a car starter motor. This has helped the starting speed a lot and now starts up properly when cold.

posted by Paul Kristensen

Poor Headlight performance

The headlights using the standard cabling on the Fant is about 3 candlepower......

 

The Fant has a problem that the alternator generates only 300W of power. If you use both headlights on dip all the time the battery gradually runs flat. This problem is even worse on the 900ie's as they have a high pressure fuel pump for the fuel injection and so load and consumption balancing is more important. The lights are fed straight from the wiring harness and handlebar switch, which is not capable of supplying the correct current loading, hence the headlights appear to be about 3 candlepower. A simple answer that most of us have found, is to run with one headlight on when in dipped mode and both on when in high beam. The reasoning is that when using high beam you are usually out of town and moving along quicker, therefore more revs on the engine. This gives the battery it's best chance of remaining charged. It also means that for normal running ie around town and during the day the battery is getting its full charge.

To address the problem of insufficient current supply for the headlights I ran 2 heavy wires (27amp rated) from the battery, one from either side, the positive wire goes through a 15amp inline fuse holder. I then cut the wires on the bike's harness where they fork out to each headlight.  The wires from the bike side fed the coil side of the relay and the switched side fed by the heavy wire from the battery I connected to the short leads up to the headlight. I took the view that the short wire length from the split in the harness to the actual bulb should be adequate. This obviated the need for
new plugs on the back of the headlight. The relays were single pole single thro units rated at 30amps and came from my local auto accessory shop. The whole job with new wire and crimp lugs cost me £30 and it has made a difference. The wires that feed the side lights I left as they were.
 

I have modified my 900ie in this way and the results were pleasing. I am sure that yours will be just as easy.
 

 

posted by Paul Kristensen

 

 

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Copyright © 2002-2005 Paul Kristensen
Last modified: 07/02/06