This is the piece on the tunnel that is the defroster 'idiot' light. This piece is often kicked or misplaced, and is missing from many cars. Replace it with a new one despite the fact that it's completely useless.
914-632-107-00-OEM
Defroster Lever Light Assembly (requires 1 900-631-132-90 bulb), 914 1.7/1.8/2.0 (1970-76), Each Brand: Genuine Porsche[Photo]
$33.00
900-631-132-90-M97
Replacement Bulb for above Defroster Lever Light Assembly, 12V/1.2W (2721), 914 1.7/1.8/2.0 (1970-76), Each Brand: Osram-Sylvania [Photo][Photo]