Piper Part 588-073 A/C Manifold Pressure Switch (also Eaton Part# 214C40-1-61)

[DMW]

A/C Manifold Pressure Switch Help Please: We have been trying to track down an AC Manifold Pressure Switch (Piper Part 588-073) for my 1980 PA32-301T Turbo Saratoga. I believe it is also Eaton Part# 214C40-1-61. We have searched high and low with no luck. Or, does anyone happen to know of a suitable suitable substitute we can get approved through a DER? Any helpful thoughts or suggestions are greatly appreciated!