[Mgs] Brake failure warning switch

[Rick Lindsay]

Good morning folks and Merry Christmas!

Question for the folks who know brakes:  Should the
brake failure warning switch be disassembled to clean
it?  Is that even possible?  Or should I just clean
and flush it with brake fluid on the workbench until
the internal piston moves freely?  Advice?

My car has a new master cylinder (done by PO) and I
have replaced all the flex lines, rebuilt the front
calipers and replaced the rear slave cylinders.  I now
need to flush out the hard pipes before reconnecting. 
My guess is that I should do that in the same order as
bleeding the brakes - longest pipe run first working
toward the left front (LHD).

The old fluid in my car is still clear so I don't have
much threat of decomposed rubber in the system. 
Still, it will all be flushed clean and recharged
properly.

rick / '70 Split-bumper Tourer