My 1985 300CD-T (W123.153) has the factory installed alarm system.
The functionality of the alarm switch that fits to the driver's door handle/lock assembly has finally failed. The part number is 002-820-19-10 and the diagram from the Electronic Parts Catalog is attached.

I have discovered that the switch is no longer available from M-B.
For used parts, my formerly reliable So Cal Mercedes Parts seems to have gone out of business and Aurora Auto Wrecking (Seattle) has been unresponsive.

Question: Can anybody recommend used parts sources that I might check for this part? I would sure appreciate it.

Thanks-

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