Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Help with the wiring on my 600ss race conversion

[skidlids]

How big is the gray box, is it the ignition relay (usually Yellow in colour) with 1/4" spade connectors sticking out of it.
If it is then it shouldn't be buzzing/clicking. On the race bikes I usually do away with it as they have caused problems at the track before now.

and I take it your not refereing to the alloy block close to the bottom yoke which is the Reg/rec

[DRR007]

I think its the ignition relay. On looking at the fuses ive found a 15 amp fuse has blown as you look at the main fuse box its the 3rd one from the bottom, underneatht eh "stop + horn" 7.5amp fuse. I replaced it with a new one and switched the bike power on, the fuse blew instantly and the relays still buzzing? Any ideas on my next move? I can take photos if it helps. Thanks

[paynep]

Sounds like an old-style reg/rec, possibly with a dodgy earth?

If you leave the ignition on long enough it will probably catch fire, so if you're watching you'll see where the problem is!

Check that you haven't missed the loom to frame earth up on the righthand side of the airbox, the engine to frame wire at the rear of the block and that the black wire coming out of the alloy/grey box just behind the bottom yoke (that's the regulator/rectifier) is making a good earth.

If they are all ok, unplug the two connectors going into the the reg/rec (2 or 3 yellow wires input from generator + a double red and black output to battery/fusebox) and turn the ignition on and see what happens. Just don't start the bike without the red and black wires connected or you will fry the reg/rec for sure.

Good luck

[skidlids]

If we are talking about the regulator on a 600Ss it should be a single phase one with the two Yellow wires and look a bit like this one here
https://regulatorrectifier.com/catal...ges/EDL450.JPG

I can't recall which fuse is which as with the 5 looms I have modified so far I have done away with the box as well the large connector that joins the front harness to the main harness, Also done away with lighting wires, indicator wires etc

[WhiteWizard]

Fuse the red and black to the green, bypass the blue with a spriggot switch, ensuring to insulate both wires at the separation point. Then where the two reds two blacks and the green joined at the socket, black to red and green to one of the pinks. At that point introduce a yellow to bridge the black,green & red to just the black and red, again you could use a restat box for this.



Have a fire extinguisher at the ready and wear rubber wellies!

www.codezeroracing.co.uk

[skidlids]

On the 600Ss when doing away with the front harness the main wires of note that need to be used for the bike to run are

Red/Blue = Starter Solinoid
Brown = Feed to Coils
Red/Black = Feed to Fuel pump

With the Red carrying he 12 Volt from the battery going to the ON/OFF switch then out the otherside to a in line fuse and then connecting to the RED/White, this then splits into two (3 if using a electronic Tacho) with one going to the Red/Black of the fuel pump and the other to the Righthand switch gear on the non common side of the kill switch.

So that when you turn the switch to the run position it puts 12V onto the brown for the coils and also onto the start button, on the otherside of the start button it should go to the Red/blue for the starter solinoid