Looks like this but it says WIPER rather than WASH. The wash switch is a momentary switch. The top has a hole drilled into it with a green plastic film over the hole to let the light in. The light clips to the switch with a metal clip.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
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