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 Lucas stop light switches
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Simon Johnston

United Kingdom
6144 Posts

Posted - 06/06/2014 :  19:38:04  Show Profile
I'm planning to replace the stop light switch on the J2 as the one I have is somewhat temperamental. It's the regular Lucas centre pull model 51C and when I look online to see where to buy it it seems to vary in price from about £16 to £32 (incl VAT). Is there any difference between the switches being sold or do some specialists just have much higher mark ups than others?

Simon J
J3437

Tim Phelps

United Kingdom
167 Posts

Posted - 09/06/2014 :  19:57:55  Show Profile
Simon,
I think it is all just mark-up variations as I'm pretty sure they all come from the same source. The cheapest I found was here:-

https://www.vintagecarparts.co.uk/products/846-brake-switch-1

at £16.80 incl VAT. I bought one a few months ago.

The original one for MMM cars were slightly different, I believe, with a similar body, but with a side lever rotating through an arc to actuate. One appeared on Ebay a couple of months ago and I was the first to bid on it (excited and hoping others would miss it), but it went stratospheric in price and I had to let it go.
Tim
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DickMorbey

United Kingdom
3678 Posts

Posted - 09/06/2014 :  20:18:53  Show Profile
Simon I think this has been discussed previously on the Forum, but the purists will probably suggest that the 'correct original' switch would have had a side pivoting lever rather than a pull-push slider.

Dick Morbey
PA/PB 0743
Frieth, Oxon, UK
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Simon Johnston

United Kingdom
6144 Posts

Posted - 09/06/2014 :  20:26:46  Show Profile
Thanks, Tim. I'd pretty much come to the same conclusion myself, i.e. that they were all the same, and ordered one today from the Complete Automobilist at £16 plus VAT.

There was a lengthy thread (three pages!) here some time ago in which the originality issue was discussed but it would seem that by the late 30s the centre pull one (part number 315725) was the listed replacement item for Triple-M cars in the Lucas catalogue.




(I would have uploaded the listing as well but it doesn't seem to be possible to upload two different photos from an iPad!)

Edit: Crossed posts, Dick, but to be honest, the question of originality doesn't really enter into it as (a) it's for a J2 which didn't have a stop light in the first place, and (b) the blxxdy thing is hidden away in the undertray so hardly one for the OP. But as I recall, the very original P type which you had photographed had the centre pull switch and you posted a picture of it on that thread.
Simon J
J3437

Edited by - Simon Johnston on 09/06/2014 20:31:53
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DickMorbey

United Kingdom
3678 Posts

Posted - 09/06/2014 :  21:45:37  Show Profile
Quite so! That was PA0724 although the one on mine PA0743 was a lever type - not now in use, as it broke. It's in a box somewhere awaiting reincarnation.

Dick Morbey
PA/PB 0743
Frieth, Oxon, UK
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LewPalmer

USA
3244 Posts

Posted - 09/06/2014 :  23:53:15  Show Profile
This was the style in both my PB and PA.





Lew Palmer
PA1169, PB0560
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Simon Johnston

United Kingdom
6144 Posts

Posted - 10/06/2014 :  03:52:21  Show Profile
Lew, while I hadn't intended this to become a discussion about originality (my original query was about possible differences in quality between the apparently similar switches sold by different vendors at remarkably different prices) the switch you have illustrated would seem to be the modern equivalent with the contacts running parallel with the operating lever rather than the original type which had the contacts perpendicular to the lever - see the catalogue illustrations above.

As I said, it's hidden away in the undertray so hardly worth getting too fussed about as long as it works - which mine doesn't. Hence my original query!

Simon J
J3437

Edited by - Simon Johnston on 10/06/2014 04:16:39
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LewPalmer

USA
3244 Posts

Posted - 10/06/2014 :  04:54:28  Show Profile
Sorry Simon. I didn't mean to divert your query into a discussion of originality, but only responding to and clarifying Dick's posting on the lever style. But do keep in mind the catalog page you posted was for all cars using Lucas parts up to 1939. The cross reference in the back doesn't really define clearly which was used. Again, the factory was never concerned about "originality", only selling cars. So use what is available and works.

Lew Palmer
PA1169, PB0560
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Simon Johnston

United Kingdom
6144 Posts

Posted - 10/06/2014 :  06:55:58  Show Profile
quote:
Originally posted by LewPalmer
So use what is available and works.



My sentiments entirely, Lew.

Simon J
J3437
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Peter Frost

United Kingdom
57 Posts

Posted - 10/06/2014 :  11:53:01  Show Profile
Stop Lights were required from 1st January 1936 onwards.
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