Extremely Simple reliable way to switch logic level signals
The IXYS LCC120 is a solid-state OptoMOS relay with a Form C (SPDT) contact.  It can switch up to 170 mA with a maximum on resistance of 20 Ω (16 Ω typical).

The datasheet has no spec on vibration but I can't believe that would be a problem with solid state relays.  Available from Digi-Key.