Rear brake light switch

[breakwellmz]

Might anyone know the dimensions of the Grimeca rear master cylinder hydraulic brake light switch on a Mastif? I`ve got to replace mine and would like to do a straight one-off-one-on swap.
As a last resort i could buy one off Grahams i suppose.

[rcbikeracer]

I think its 10mm x 1.0, something like this
http://www.ebay.co.uk/itm/NEW-single-ba ... SwBahU0-Uq
but best wait for an expert to happen by.

[breakwellmz]

Hi.

Thanks for that.
I recently had the same problem on my Gas Gas after i had stripped, rebuild and bled the system so replaced it with a mechanical one (I was selling it on)That one was ten years old as well!
I know some use a 1mm pitch thread and others 1.5mm, perhaps i should just order one from Grahams.

[breakwellmz]

I think its 10mm x 1.0, something like this
http://www.ebay.co.uk/itm/NEW-single-ba ... SwBahU0-Uq
but best wait for an expert to happen by.

Grahams- £16.18 + P & P

[jagwillie]

I recently ordered a brake light switch for my Replica from Graham's. Original type switch and quick service.
Bill Bassett

[DAVID THOMPSON]

hope its not out of the same production run ..that the 5 i have replaced on my 3 mz bikes..
came from

over the last 14 years

[jagwillie]

David,
I hope so too, I most likely won't put that many miles on it and my riding time will most likely be up in less than 14 years. I was just trying to keep mine as original as possible. So far, not too bad, one switch, 2500 miles, twenty one years.
Bill Bassett

[breakwellmz]

Hi

I couldn`t resist buying this one-

http://www.ebay.co.uk/itm/152003354916? ... EBIDX%3AIT

[breakwellmz]

It turned up today.
After removing the current switch i found the new one to be to long.
However i can confirm that the original switch thread is 1mm pitch x 18mm long.
After putting the original switch back in, it now works!
No fluid was lost during the swap-over, so far simpler than i thought it was going to be.

[ironhorse99]

Not being able to find one myself I picked a package of momentary push-button switches from radio shack(yes they are still in-business) pt#275-1548 & installed at bottom of break pedal. I removed the attached stop & screwed in place. works great. had 1 for years & it just went south....so I just popped in a replacement. they come 4 to a pack.