Yet Another------What Is This Part?

I was looking for something else a while back and found another interesting part that I can only speculate on its purpose. The housing is like a regular electronic voltage regulator but the connector is the familiar 5-pin ECU. It also has an adjustment screw with an arrow that looks like it says "high" on one end. The part number is pretty clear as 3501840.

It can't be an ECU since it doesn't have the power transistor and I can't fathom the need for a 5-pin regulator. Maybe an adjustable timing control?

All WAGs welcome.

Thats the plug for the electronic ignition setup. I wonder if it is a drag race only schmere, designed to operate WITHOUT an alternator.....

Thats off of a police package car. We had a bunch of police cruisers in the yard years ago and just about everyone had it. I've got one around the shop somewhere.

You know, I have seen parts listings for regulators that say not for 117A units, etc. I wonder if that is the regulator for that application?

According to the online part search it is: 3501840 1977-79 A/C CUT-OFF CONTROL and 3501840 control clutch cut off 77 volare, aspen, fury, monaco, gran fury, royal monaco

So that probably IS a Police spec part. It would disable the A/C clutch on WOT to improve acceleration. Kooky.

Yes. They used to be a switch mounted on the dash. Don't know what year they came up with this 74 or 75 I figure. Still in use 1978.

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That picture is pretty darn conclusive. Now, what is the adjustment for? Is there a wiring diagram? Anybody want it... I admit I was holding out the police info and knew it came from an A38. I might be able to dig up the harness it came off but that would be a long shot.