I looked for industrial sources for the cans .... I assume GM had them produced by someone, unlikely they made them in house. Back in the day vacuum actuators were very common ... and these cans a very simple design. Heck a person with a good shop could almost make one from scratch.
Lots of vacuum actuators out there, but nothing this size.
I have no idea why the electric systems are so expensive ... a couple of small linear actuators and four limit switches seems like all it would take to me. Adapter to bolt them in place of the cans and some basic electronics that were triggered by power to the headlights. There are a bazillion small linear actuators for very cheap, some probably have adjustable limit switches built right in.
Last edited by dataway; 10-16-2019 at 08:54 AM.
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