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#712971 - 10/28/17 8:04 am Norton Commando Left Handlebar Switch  
Joined: Sep 2004
Posts: 680
gunner Online content
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gunner  Online Content
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Farnham, Surrey, UK
I'm rebuilding a 72 Norton Commando 750 Roadster and need some advise on which handlebar switches to use.

Although I have wired an ignition and charging circuit there is no harness for the headlight or horn.

The bike came fitted with Brembo master cylinder with a rectangular brake fluid reservoir so there isnt any space for right hand switch gear.

I'm looking for a decent quality left hand switch which includes on/off for lights, hi/lo beam, horn and indicator switches. I have looked at some of the cheap switches on eBay but the quality seems rubbish.

Does anyone know of a good quality left hand handlebar switch with the above features? I'm happy to use switch gear from other bikes so long as the quality is good.

Some info on how to wire in a handlebar switch would be useful. From what I gather there are usually three a live inputs for the lights, horn and indicators but is there a standard wire colour for each as well as the output wires?

All info welcome.


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
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#712990 - 10/28/17 12:51 pm Re: Norton Commando Left Handlebar Switch [Re: gunner]  
Joined: Jun 2002
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Stuart Online content
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Hi,

Originally Posted by gunner
I'm looking for a decent quality left hand switch which includes on/off for lights, hi/lo beam, horn and indicator switches.

If you must, Suzuki, possibly older ones. Afaik, everyone else thought putting on/off for lights and hi/lo beam in the the same switch cluster was a really facepalm idea; certainly I remember it was Suzukis that were notorious for riders hitting the on/off when they just wanted to turn hi to lo. eek

Just as a matter of interest, have you kept the standard '72 Commando ignition switch, or is that all different?

On my T100, I'm using the Sparx version of the Lucas switch cluster used on the T160 and '76-'78 Triumph twins' left 'bar - they have everything you want plus headlamp flash but not headlamp on/off - I'm using the '68-'70 3-position toggle switch in the headlamp shell for that. Unfortunately, the last Sparx cluster I bought (about three years ago), the quality was really crap. frown

Originally Posted by gunner
info on how to wire in a handlebar switch would be useful. From what I gather there are usually three a live inputs for the lights, horn and indicators but is there a standard wire colour for each as well as the output wires?

One bike maker use the same wire colours as another? laughing Last time that happened was the British bike makers, but only because cheap was more important than 'intellectual property'. smile

Ime, you're right about the inputs; outputs will be: hi and lo from that switch, horn from the horn button and right 'n' left from the indicators switch.

If the cluster has hi/lo but not headlamp on/off, you might also find a separate output from the headlamp 'flash' button.

For actual wire colours, ime either know which bike the cluster came from and find its wiring diagram (relatively easy these days with the www) or, if you buy Chinese cheapie, expect to have to do your own wire identification, think you don't have to when you find a wiring diagram enclosed but then have to when you find the enclosed wiring diagram is for a different cluster ...

Hth.

Regards,

#712993 - 10/28/17 1:37 pm Re: Norton Commando Left Handlebar Switch [Re: gunner]  
Joined: Dec 2004
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kommando Online content
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CNW use a Honda switch cluster and modifiy the wires to suit the Norton harness.

http://coloradonortonworks.com/part-categories/electrical/#post-208


[Linked Image]

You would still be missing lights on/off.


#713004 - 10/28/17 4:08 pm Re: Norton Commando Left Handlebar Switch [Re: gunner]  
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gunner Online content
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Thanks for the info guys, I was deliberately looking for a combined lights on/off, hi/lo beam, horn & indicator switch, since this seemed the easiest approach. Agreed that its easy to turn the lights off by mistake but equally easy enough to turn on again.

I do have the original Lucas 3 position ignition switch which sits on the left hand side next to the side panel. I decided not to use this switch for two reasons as follows:-
- I don't like the idea of reaching down sideways to turn the lights on or off.
- I'm using a six way fuse box under the side panel, all power to the fuse box is managed by a single position on off ignition switch. My idea was that outputs from the fuse box lead up to the handlebar switch which then controls lights etc.

I might wire in a separate headlight on/off switch in the headlight shell like my A65 & B44, I could then use the Sparx or other unit.

The CNW switch looks the business so food for thought !


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
#713146 - 10/30/17 1:46 am Re: Norton Commando Left Handlebar Switch [Re: gunner]  
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Stuart Online content
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Hi,

Originally Posted by gunner
Agreed that its easy to turn the lights off by mistake but equally easy enough to turn on again.

In theory, yes. In reality, if you happen to do it when leaned over, it's otherwise completely dark and you're ... errr ... travelling quickly ... let's just say it's an excellent cure for constipation ...

Regards,

#713177 - 10/30/17 7:32 am Re: Norton Commando Left Handlebar Switch [Re: gunner]  
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gunner Online content
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Farnham, Surrey, UK
After some Googling I managed to find a US based manufacturer called K&S Technologies who produce a range of high quality switchgear some with DOT approval, see This Link.

I decided to go with their Black Universal Turn Signal Switch 12-0041B and found a seller on eBay UK, see This Link.

This switch comes complete with male & female block connectors which makes wiring a bit simpler. It does not have a lights on/off switch so I have decided to use a Lucas toggle switch in the headlight shell.

It also comes with instructions on what each of the wires are for which will save time trying to work this out with a multimeter. There is also a built in High Beam warning LED which should save having to wire in a headlight high beam warning.


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
#713179 - 10/30/17 8:45 am Re: Norton Commando Left Handlebar Switch [Re: gunner]  
Joined: Jun 2002
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Stuart Online content
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Stuart  Online Content
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Scotland
Hi,

Originally Posted by gunner
lights on/off switch
decided to use a Lucas toggle switch

Risking telling you things you know already:-

. 31788 and 35710 (used '68-'70 and on '78 T140E's) are 3-position (off, pilot/tail, head/tail), have a single input and can turn off the pilot when the headlamp's on and vice versa;

. 34419 (used '73-'78 on Triumphs except the T160) is 3-position but has separate inputs for pilot/tail and headlamp, so can't turn off the pilot when the headlamp's on;

. 34660 (T160 only) is 2-position on/off.

Hth.

Regards,

#713184 - 10/30/17 11:15 am Re: Norton Commando Left Handlebar Switch [Re: Stuart]  
Joined: Mar 2006
Posts: 3,469
L.A.B. Online content
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L.A.B.  Online Content
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Posts: 3,469
Norfolk, UK
Originally Posted by Stuart
34660 (T160 only) is 2-position on/off.


34660 was also the '71-'74 Commando lighting (headlight) switch.

https://andover-norton.co.uk/en/shop-drawing/187/head-lights-head-light-fittings
https://andover-norton.co.uk/en/shop-details/17438








Last edited by L.A.B.; 10/30/17 2:27 pm.
#713186 - 10/30/17 11:55 am Re: Norton Commando Left Handlebar Switch [Re: gunner]  
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gunner Online content
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Farnham, Surrey, UK
I went for a 2 position (on/off) Lucas Type SPB200 31909 Toggle Switch on eBay which should fit in the headlight "D" hole.

Since I never use side lights a simple on/off switch seemed the best approach.


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando

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