Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Dead bike P2

I can second what phil_h is saying. The regulator uses the earth connection as a point of reference, without one it won't know what to do.

My monsters got a dedicated cable to the regulator earth, i can have a look at the 916 tomorrow to see how it's done on mine and let you know.

[TopiToo]

Originally Posted by Shandy

I can second what phil_h is saying. The regulator uses the earth connection as a point of reference, without one it won't know what to do.

My monsters got a dedicated cable to the regulator earth, i can have a look at the 916 tomorrow to see how it's done on mine and let you know.

Hello Shandy

That would be great, a pic of this earth would be good
showing to and where it goes.

regards

TopiToo

[phil_h]

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.

[Karl]

Steve, hope this helps. Just looked looked at my 916 and taken this pic. I have a earth wire going from the regulator/heatsink bolt to the main harness.

[keefer]

same as Karl
so it wanst the batteries fault then hey ?top kit that

Mine '95 916bp is the same as Karls, wiring heading off into the loom which i assume goes to the battery negative,





I was out in the garage as Karl posted his picture up, wish i never bothered though as i found a few drips of oil coming off the bottom of the engine, ah well thats another thread for another day.

Cheers,

Shandy

[TopiToo]

Hello

many thanks again one and all.

I need to find that earth got a feeling its attached to the negative
terminal on the battery, my mistake

great pictures though . . .

regards

TopiToo

PS Keefer never thought the battery was at fault, I new it could only
be my wiring, aternator, or rectifier. That battery got me home

[phil_h]

Terribly clean those funny red bikes ... dont you take them out to play ?