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Spare parts for 850 mk3 handlebar switches

Discussion in 'Norton Commando Motorcycles (Classic)' started by johnny Lagdon, Feb 9, 2019.

  1. johnny Lagdon

    johnny Lagdon

    Joined:
    Nov 18, 2016
    does anyone know a source of spare parts for Lucas switches fitted to 75 Mk3's? Looking for the tiny fiddly bits, springs, contacts etc.
    Thanks
     
  2. brian4.2

    brian4.2 VIP MEMBER

    Joined:
    Jun 1, 2016
    johnny Lagdon likes this.
  3. p400

    p400 VIP MEMBER

    Joined:
    Jul 14, 2014
    Anyone have the Lucas numbers for these complete 1975 Lucas switch assemblies?


    1975LucasHandlebarSw.jpg
     
  4. p400

    p400 VIP MEMBER

    Joined:
    Jul 14, 2014
    Norton numbers for Lucas switches

    HandleBarLucasSpares2.jpg
     
    Last edited: Feb 9, 2019
  5. Deets55

    Deets55 VIP MEMBER

    Joined:
    Oct 3, 2013
    I don’t think they are available anymore. There are repos that are used on older Triumphs that are similar and are sold as Norton replacements. Look at Fast Eddies Triumph he is selling, appears to be the same switchs. Not all, if any, of the inner parts are interchangeable between the older and newer repos.
    Pete
     
  6. mdt-son

    mdt-son

    Joined:
    Jan 19, 2012
    Reproductions by Sparx is your only option if you want new switch clusters and insist on maintaining the appearance of originality. CnW sacrified original looks and offers japanese switches. Combined non-stock switch clusters and the master cylinder requires careful investigations and a good deal of luck. Please keep us posted if you go that route.

    -Knut
     
    p400 likes this.
  7. johnny Lagdon

    johnny Lagdon

    Joined:
    Nov 18, 2016
    I had a look at their site, seems to show parts for the earlier ones..
     
  8. Stephen Hill

    Stephen Hill

    Joined:
    Oct 28, 2009
    I have never done this myself, but friends have bought Sparx units and transferred the switches into the original Lucas alloy bodies without any difficulties.

    Stephen Hill
     
    p400 likes this.
  9. To surgeon

    To surgeon

    Joined:
    Jun 11, 2019
    Don’t even have to do that, I found a set of rt/left sparx that even have the same colored wires, direct bolt in, works perfectly. Even has bullet ends.
    Bonneville speed shop had them, just used the fronts with wires buttons etc, discarded the backside attachment.
     
  10. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    I think perhaps you've misunderstood the reason as there's no actual need to transfer the Sparx switches, it's done to maintain originality as the Sparx switch clusters are marked 'Sparx' not 'Lucas'.
     
  11. maylar

    maylar VIP MEMBER

    Joined:
    May 13, 2007
    What / who is Bonneville speed shop?
     
  12. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
  13. maylar

    maylar VIP MEMBER

    Joined:
    May 13, 2007
    Thanks. The switch you linked to they call "left" side, but on the 73-74 models would be right side, without a clutch lever. Indicator, kill and spare. My kill switch doesn't work and has been bypassed, if the innards of the Sparx switch can be transferred to my Lucas housings I'm very interested. Anybody know for sure?
     
  14. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
  15. maylar

    maylar VIP MEMBER

    Joined:
    May 13, 2007
    Thanks. Chris Knight shows the correct part - red kill button and all - but none in stock. Rats.
     
  16. Nortarly

    Nortarly

    Joined:
    Nov 13, 2011
    I bought mine from British Cycle Supply they're part numbers for them are 391-35316 Left Hand Late and 391-35317 Right Hand with Electric Start both are made by Sparx but I put them on 4 years ago and have had no problems at all with them. Their US phone number is 201-880-0366 or email to info@britcycle.com
     
  17. To surgeon

    To surgeon

    Joined:
    Jun 11, 2019
    Yes, the internals are 100% transferable too. My Lucas housings were in terrible condition.
     
  18. maylar

    maylar VIP MEMBER

    Joined:
    May 13, 2007
  19. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    All the factory did was to swap the clusters over so the switch functions are as before only on the opposite side and reversed top to bottom:

    _______________________________________________________________

    SERVICE RELEASE

    CATEGORY OF RELEASE: 4 (as overleaf) motorcycles No. N3/3

    NATURE OF RELEASE: Reversal of handlebar switch clusters.

    MODELS AFFECTED: Late 1972 Commando - all models.

    DISTRIBUTION: Worldwide (for general distribution),

    EXPLANATION:
    As a direct result of user requests for right hand operation of the direction
    indicators, the decision has been taken to interchange the left and right hand switch
    clusters. To save changing wiring colour identification at 6 connectors, the functions
    of kill button and headlamp flasher and spare button and horn shown in Illustration 2 of the
    Riders Manual are also reversed. New prints of the handbook will include this modified
    layout but where motorcycles have been despatched which are at variance to the
    handbook, the supplying dealer is requested to acquaint the new owner with the revised
    layout. From the time of the changeover, the revised control positions will be:

    LEFT HAND........................................................RIGHT HAND

    Top button - Headlamp flasher..................................Spare button
    Lever switch - Dipswitch.........................................Direction indicators
    Bottom button - Horn.............................................Kill button

    ACTION: Ensure that all new owners of modified models are suitably briefed.

    _______________________________________________________________________
     
    maylar likes this.
  20. maylar

    maylar VIP MEMBER

    Joined:
    May 13, 2007
    Thanks.
     

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