On Tuesday, October 2, 2018 at 1:20:05 PM UTC-4, Retting wrote:
Wings and Wheels list 4201 hardness for $150, or will have one made.
I ‘searched‘ the item and a list of options came up.

R

It's a standard DB25 connector (albeit in an atypical housing that locks on without screws - anybody know of a source for exactly such a connector?). For use in a single-seat glider (no intercom) probably only need 5 wires: ground, power, mic, PTT and speaker. $150 seems a bit high if you can solder your own. The owner's manual (available online) has the wiring info.