monza 12 volt conversion

[steve 43]

Hi; Would any one have a wiring diagram they could send me.
Also info on ,or diag. of the conversion to 12V.
I have a monza thats been converted and the work is realy quite sad.
Thanks, Steve .

[darnold]

Are you building a track bike or a street bike with charging system and lights?

You can find scanned images of electrical schematics from original manuals on . If it's a track bike there is a simple schematic in the Singles Resource link on the main docc.ca page.

-dan

[Rocket Rick]

hi Steve,
To convert an alternator single to 12v, do the folowing:
Disconnect & insulate the 2 ground wires on the stator coil. These are the wires soldered to the backing plate. Heat shrink tubing is good for the insulation. Connect the alternator wires to a 25amp 50 PIV full wave bridge rectifier (availiable at an electronics store- cheap). Connect the positive & negative terminals of the rectifier directly to the battery & ground (+ to+; - to gr; - on battery to gr). The rest of the wiring stays the same. You do not need a regulator. Works great.

[darnold]

Rick,

If get a chance shoot some pictures of the modified stator and I'll post them with your instructions.

-dan

[Rocket Rick]

Sorry Dan,
Don't have a modified stator lying around. Will try to do a before & after for you in the near furture.

[steve 43]

Hi; The reason I had inquired about the conversion was that I had recieved a monza with a conversion already done. I'm trying to get the bike back to original, but keeping the 12 V system.
As it stands now the wiring looks like it was done by one of the three blind mice.
Thanks for the replys, cheers, Steve.

[Rocket Rick]

OK Steve,
Now that we're clear on what you want, we have to ask a few questions, like: How much of the original harness remains?
The 12v conversion would only require the replacement of the original 6v regulator/rectifier unit, and would not require any replacment wiring. If you've got a rat's nest, it could be because of old age and the plastic harness tubes disintegrating (these flexible black tubes cover the wires, and are similar to heat-shrink, and Ducati still uses it). It could also be the 18, or 20 gauge wire Ducati used was a little light and prone to melting if electrical ugliness happened, and a previous owner re-wired.
So what have you got, and what do you want to do? Now we know the general situation Give us the details, and we'll try to help.

[pursang]

[Eldert]

[pursang]