That is a standard VW/Audi and probably Porsche door plunger switch from the late 60's to the mid 80's. Your local pick and pull should be full of them.
QUOTE(dudzy's914 @ Jun 29 2015, 06:57 AM)
I need to buy or where can I buy this E-brake sensor unit(?) I need this thing in the picture-not sure what it's called.