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Ducati Meccanica
Posts: 2,527
Join Date: Sep 2004
Location: Pulborough, W. Sussex
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Right, I've been in the garage and taken the fairing off to see whats its all like and get you some pix ... and there is no direct earth bond from the regulator to the chassis. I've got a 98 SPS, and the regulator is fixed to a rubber mounted heatsink.
the yellow wires are the ac in from the alternator, the 2 green wires are the earth connection from the regulator which connect to 2 black wires going to earth somewhere via the loom. This connection is very important at both ends, so clean the connector block if it looks corroded. From the wiring diagrams, earlier models look to have just one earth connection and a red/white charge light wire. 2 red wires then feed the rectified, regulated voltage into the wiring loom.
(in the pic i'm holding my external charger lead out of the way)
The second pic is there to remind us all that there is a stupid metal connector that can cause faulty readings fitted on either end of the battery. The terminal you fix the wires to is just a swaged-fit into the metal plate and can be pulled through if you overtighten the nut trying to get a 'better' connection - which makes it a worse connection. I've welded up the backs of mine.
Last edited by phil_h : 16-Oct-2006 at 18:53. 
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