reverse polarity with a twist.

Everybody sleep on it.  Thanks for all of the discussion.  It really gets the mind working.  I will post back tomorrow with status.

Maybe you ought to reconsider opening up the switch to modify it for separate pwr/gnd inputZzzzzz

No need to open the switch we can deal with it.John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

I really think your last diagram is the best by far and I think dualsports idea to reconfigure the internals of the switch to have separate pwr/grd will be the way to go.  I will look at it in the morning and see how bad it would be.

I think I've got it going back to relays on the signal legs.  I will post back after I try it.  It seems too simple.

ok i dont completely understand what the heck is going on but to me it sounds like you have a switch that can throw both poss and negative up for pos down for neg or whatever but when you thro pos it feedbacks neg thru the line and vise versaumm i guess. Have you tried reverse polarity on that signal wire. meaning two relays on that one singal wire One for each switch with diodes. corespoding to the signal going to the relays ok dont hate if i got your postings wrong and this was already discussed but i read and did not see it. Switch pos in neg in signal ( pos or neg) take that signal wire and split it relay 1 take one split and connect to pin 85 with a diode in order to make that a pos trigger relay. ( grey stripe facing away from relay) take pin 87 make that your output to the valve. pin 86 ground pin 30 possitive 12 volts 87a not used same for relay 2 take signal wire split connect it to pin 85 thru a diode with the strip facing the relay making this a negative trigger relay., pin 86 12 volt fused pin 87 output to valve pin 30 ground. ok with the diodes and such in place the feedback should not be an issue becuase there is no way the valve can see that feeback since it is not connected the output wire of the valve does not see the input of relay unless it is supposed to . Your main problem if it or this does not work is that the switch actually throws the opposite signal when you let go of it, Like if you push down you thro a negative signal., or whatever but when you let go of the down motion it automatically throws a possitive signal. if that is the case you cant use that as your switch and i would search for another factory looking switch. hope this helps somewhat as i did not understand completely what your doing and such but post back, Jon

Installer/Help Technician

---coral springs florida---

mecp certification is not always needed. I have it and it has not helped me out at all. my experience out shines it.