Hello again -

First, thanks for all the positive feedback!  It's quite a change to be giving back to the community for once.

I wanted to collect the questions so far in one spot, and take a stab at answering them:

Question: Price?
Answer: $450 for the box, connectors, and lights; add $150 for full set of prox sensors.  Subtract $158 if you don't want the lights.  This is just parts and labor--my motivation is to improve gear indication reliability! 

Question: What kind of metal do the prox sensors detect?
Answer: I have data for copper, aluminum, brass, stainless steel, and iron.  Theoretically, it should work with any conductive metal.  The sensors are inductive, not magnetic...which is really slick!

Question: Mounting options--photos of install?
Answer: This is a separate experiment I'm working on--I want to mount the prox sensors directly on the overcenter links (thanks to Chris Zavatson for the inspiration, see his article here).  I think it's the best option, but you could either use the existing micro switches or use the prox sensors to sense any part of the gear system (including the actuator pins for the stock system).

I think that's everything so far.  Let me know if I missed something!

Louis

P.S. Obviously, this is an experiment and it's entirely up to the installer to determine applicability and suitability for intended use.