66 250 Monza wire diagram

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Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

66 250 Monza wire diagram

Postby Davescycles72 » Fri Jun 18, 2021 4:58 pm

I have a stock wiring harness in good condition, but what color wires on this schematic, I have no idea. Any help with colors would be appreciated.download/file.php?mode=view&id=6422
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ducwiz
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Location: near Frankfurt, Germany

Re: 66 250 Monza wire diagram

Postby ducwiz » Fri Jun 18, 2021 6:30 pm

schematic.gif


Is this helpful?

Hans
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Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

Re: 66 250 Monza wire diagram

Postby Davescycles72 » Sat Jun 19, 2021 12:18 pm

Thanks Hans, I have it. This is the diagram for the 63 thru 65 Monza. The switch is different along with all the headlight wiring. It uses this board in the headlight:
5C439CEC-0968-41EB-980C-E2F9A6EBFD01.gif
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ducwiz
Posts: 604
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Location: near Frankfurt, Germany

Re: 66 250 Monza wire diagram

Postby ducwiz » Sat Jun 19, 2021 2:39 pm

OK, different year of mfg.

So, I tried to enhance the wire colors hidden in your figure by processing it with a picture manipulation program. The result is not bad, might give better assistance:

1966_enhanced.jpg


..
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Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

Re: 66 250 Monza wire diagram

Postby Davescycles72 » Sat Jun 19, 2021 4:48 pm

Thanks, it’s better then what I had but still pretty hard to tell colors clearly. Maybe someone would remove their headlight and take a pic of that board? Looks like in your enhanced pic,they used green and black for ground?

Blaine.Hale
Posts: 38
Joined: Mon Jun 30, 2014 8:33 pm

Re: 66 250 Monza wire diagram

Postby Blaine.Hale » Sun Jun 27, 2021 11:23 pm

Davescycles72 wrote:Thanks, it’s better then what I had but still pretty hard to tell colors clearly. Maybe someone would remove their headlight and take a pic of that board? Looks like in your enhanced pic,they used green and black for ground?

Currently building a harness from my 67 Monza. Here's what I believe to be accurate based on pieces of the old harness and that same diagram I'm working off. I still need to wire the handlebar controls and I THINK they are red, yellow, black and GREEN for those 4 wires. The green was pretty hard to discern. What isn't pictured here is yellow going aaaallll the way back to the tail light. I put a break in that before the rear fender for quick disconnect reasons. Also, the blue wire goes back and down to the horn.
Side note: Yes, both green AND black are used for ground. Also black with white stripe is the frame ground from the board to the coil. Ducati is all over the place with their wiring.
Now if I could find a dang key for mine, I'd be very happy.
*Edit: My alternator wires may confuse you because they aren't yellow. They're black and white because I used an industrial solution for the high temp insulated wires going to the alternator. That was purchased back before I could find the dual yellow one online.

Image

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Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

Re: 66 250 Monza wire diagram

Postby Davescycles72 » Wed Jun 30, 2021 6:15 pm

922287FD-0B43-4FB1-8E89-82613DFAD1A5.jpeg
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Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

Re: 66 250 Monza wire diagram

Postby Davescycles72 » Wed Jun 30, 2021 6:23 pm

45F1B9D8-87D7-4DAD-B833-6051B4F6410A.jpeg
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Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

Re: 66 250 Monza wire diagram

Postby Davescycles72 » Wed Jun 30, 2021 6:30 pm

I’m my pics, the yellow tape on black wire is t/l. Electrex world told me the gray wire that goes to the missing one is not necessary. I will get a pic of the regulator on here today. I’m using the stock stator with upgraded wires,which was charging when I wired everything direct. Now I got nothing but an ignition light. Lol

Davescycles72
Posts: 27
Joined: Fri Jun 11, 2021 4:03 pm
Location: Johnson City, Tn

Re: 66 250 Monza wire diagram

Postby Davescycles72 » Wed Jun 30, 2021 6:41 pm

C51FB103-BE2D-4F0A-854C-8BB61E212048.jpeg
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