Quick brake switch Q.

Post any technical questions or queries here.
Post Reply
User avatar
Bitsilly
1275 Cooper S
Posts: 833
Joined: Fri Jun 19, 2020 8:09 pm
Location: Wales
Been thanked: 4 times

Quick brake switch Q.

Post by Bitsilly »

Fitting the loom today and realised the spur for the brake switch is pretty short, then realised that I have no switch triggered by the pedal.
As I have said before, my car came in boxes of bits and a shell.
So how is the brake light triggered please?

Ta.
User avatar
woodypup59
1275 Cooper S
Posts: 1569
Joined: Thu Jun 24, 2010 5:28 pm
Location: London UK
Has thanked: 8 times
Been thanked: 22 times

Re: Quick brake switch Q.

Post by woodypup59 »

For Mk1 and mk2 cars Its a hydraulic switch in the brake pipe union under the clutch housing.

Not sure when they moved to the mechanical switch on the pedal but well into the 70s I reckon.
User avatar
Spider
1275 Cooper S
Posts: 4851
Joined: Mon May 07, 2012 6:10 am
Location: Big Red, Australia
Has thanked: 187 times
Been thanked: 65 times

Re: Quick brake switch Q.

Post by Spider »

woodypup59 wrote: Mon Feb 22, 2021 6:25 pm Not sure when they moved to the mechanical switch on the pedal but well into the 70s I reckon.
When they went to Tandem Brakes.
User avatar
Bitsilly
1275 Cooper S
Posts: 833
Joined: Fri Jun 19, 2020 8:09 pm
Location: Wales
Been thanked: 4 times

Re: Quick brake switch Q.

Post by Bitsilly »

Thanks, that explains it.

I don't suppose anyone has a part number, as I do not have one!

Cheers

Ed
User avatar
iain1967s
1275 Cooper S
Posts: 1844
Joined: Sat Jun 10, 2017 12:46 am
Location: Cambridge, MA, USA
Been thanked: 7 times

Re: Quick brake switch Q.

Post by iain1967s »

13H3735 for the pedal mounted switch ~1976 onward
BMK1903A for the thin locknut to hold it in place on the pedal box

13H1731 for the earlier Mk1/Mk2 hydraulic type
(Intermotor 51600 for non-OEM replacement)
User avatar
111Robin
1275 Cooper S
Posts: 2633
Joined: Mon Dec 19, 2011 7:59 pm
Location: Aberdeen Scotland
Has thanked: 3 times
Been thanked: 17 times

Re: Quick brake switch Q.

Post by 111Robin »

User avatar
Spider
1275 Cooper S
Posts: 4851
Joined: Mon May 07, 2012 6:10 am
Location: Big Red, Australia
Has thanked: 187 times
Been thanked: 65 times

Re: Quick brake switch Q.

Post by Spider »

I haven't found the replacement (mechanical) switches too good in recent years.

I've been using these, similar money and a much better switch;-

https://uk.rs-online.com/web/p/push-but ... s/1036274/
User avatar
Bitsilly
1275 Cooper S
Posts: 833
Joined: Fri Jun 19, 2020 8:09 pm
Location: Wales
Been thanked: 4 times

Re: Quick brake switch Q.

Post by Bitsilly »

Excellent.
And once again thanks.
User avatar
LarryLebel
998 Cooper
Posts: 549
Joined: Sat Feb 15, 2014 12:02 am
Location: North Vancouver BC

Re: Quick brake switch Q.

Post by LarryLebel »

If you use silicon hydraulic fluid the Intermotor will only last a few months. The Harley Davidson hydraulic switch I'm currently using has lasted a couple of years, so far.
Post Reply