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Wiring diagrams

Discussion in 'Norton Commando Motorcycles (Classic)' started by guzzi7474, Jul 11, 2019.

  1. guzzi7474

    guzzi7474

    Joined:
    Jun 15, 2005
    Hello, I can produce colour wiring diagrams at A3 size laminated. These are great for the workshop as they are wipe clean. At the moment I produce ones for early Moto Guzzis but as I know your uberfurer Jerry I have agreed to do some Commando ones. What do you guys think? I need to know the models and number of folk who would want one so I can start on the most popular.

    Best wishes Chris
     
  2. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    Bill Turnbull did an excellent rendition of the pre-MK3 diagram in color.

    With his permission I have modified it to accommodate some popular upgrades.

    [​IMG] Norton Commando Wiring Diagram


    [​IMG] Norton Commando Wiring Diagram + Podtronics


    [​IMG] Norton Commando Wiring Diagram + Boyer


    [​IMG] Norton Commando Wiring Diagram + Boyer + Podtronics


    [​IMG] Norton Commando Wiring Diagram + Tri-Spark


    [​IMG] Norton Commando Wiring Diagram + Tri-Spark + Podtronics


    These only took a few minutes to do, and I would be happy to make others for anyone that is unsure or uncomfortable with wiring.

    Hope this helps!
     
    Last edited: Aug 28, 2019
    Gadge, maylar, lcrken and 1 other person like this.
  3. texasSlick

    texasSlick VIP MEMBER

    Joined:
    Jan 2, 2013
  4. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    Still one or two errors on those diagrams.
    Blue/yellow UY should be drawn connecting to master switch terminal 4, not T3 as shown. Brown/green NG connects to T3 and not T4.
    The ballast resistor to coil(-) wire shown as white/blue WU should be white/purple from the ballast resistor, not just the link wire.
    Direction indicator green/red GR and green/white GW from the handlebar switch cluster go to the under-tank junction and not as shown.
    'LH' and 'RH' handlebar switches may be reversed.
     
  5. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    @L.A.B. I'm happy to modify them - it will take just a couple of minutes, if the general consensus is that we should have something accurate rather than replicate the inaccuracies of the workshop manual!

    I’ll take a look tomorrow morning
     
  6. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    The GY and GR direction indicator wiring are inaccuracies on the factory drawings. The WP (BW and BY) are omissions. The factory drawings do show Edit: WY UY to T4 and NG to T3 correctly.
     
    Last edited: Jul 11, 2019
  7. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    [​IMG]

    This only applies to the '72 - '74 wiring diagram as the '71 (below) is not exactly the same.
    [​IMG]

    '68-'69 and 850 Mk3 again are both completely different.
     
  8. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
  9. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    Yes, that looks good.
     
    gtiller likes this.
  10. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    Very nice drawings, Grant. Any chance you have the data to do one for the MK3?

    Ken
     
    Torontonian likes this.
  11. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    The diagrams have all been updated now to reflect the corrections that @L.A.B. has highlighted.

    @lcrken yes, i'd like to take a look at the MK3 diagrams - @Saber13 has kindly done a colour version, so with his permission, maybe i could look to do something similar.
     
  12. MichaelB

    MichaelB VIP MEMBER

    Joined:
    Jan 14, 2004
    Outstanding, thank you for doing this.
    Nice to have cleaned up drawings.

    I have further drawn on a print showing three phase with fuse direct to battery, assimilator elimination with Spark Brite added and dedicated ground to coils.
    If your offering to clean this, where do I send it? PM sent.
     
  13. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    Last edited: Aug 15, 2019
  14. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    Last edited: Aug 28, 2019
  15. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    kommando likes this.
  16. raleighmodel6

    raleighmodel6

    Joined:
    Jul 11, 2007
    Grant, Holy smokes!—if you’ll pardon the Lucas joke. That diagram is beautiful and will be so useful. I’d like to publicly thank you for your contributions, the work you did on just the stock diagram was incredibly useful to me and having the custom diagram even more so.

    I found the subject of this diagram, a 1973 850 Roadster, in 1984 in Sonoma, California with just 200 miles on it. Despite the mileage, its paint was very faded—still is. It had been left outside for years, run from time to time in the guy’s backyard, stationary on its centerstand. He no longer rode, but loved the sound of his Norton. Nevertheless, it ran pretty well!—but made a lot more power when it got a rebore, new valves and guides.

    Steve Black
    Central Oregon
     
    gtiller likes this.
  17. lazyeye6

    lazyeye6

    Joined:
    Feb 28, 2014
    Don't they all?
     
  18. gtiller

    gtiller VIP MEMBER

    Joined:
    Nov 5, 2012
    As per a post elsewhere, but in the interest of keeping everything in one place.

    I have added a wiring diagram for a Power Arc ignition:

    [​IMG] Norton Commando Wiring Diagram + Power Arc

    And here is a second diagram.
    This one includes the MC2 dual output single coil that Old Britts sell in their Electronic Ignition kit:

    [​IMG] Norton Commando Wiring Diagram + Power Arc + MC2 coil

    The Power Arc is interesting, as they are optical instead of magnetic, plus they support multiple ignition timing curves which you can tweak yourself.
     
    Last edited: Sep 19, 2019
  19. david levine

    david levine

    Joined:
    Feb 26, 2009
    ditto on one for the mk111
     

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