I guess I'll wait on the Taylor K-1766 kit to confirm. It would be great to get the Easytouch to give me a reading as well.
Run a UL approved four conductor cable (22 AWG) from the IntelliChlor Power Center to the Load Center. The preferred wire color scheme is red, yellow, green, and black.
Any basic 4 conductor communication wire (22 AWG) will work.
Just make sure that the wiring sequence is correct.
Are you testing for CC as well as FC? The CC number, if above zero, indicates that there is something your chlorine is working on. Which may be the case, since your water has lost its sparkle.
Weather is a factor too... I have to boost up my SWG as temps rise. I would use liquid chlorine to get your FC where you want it, then tweak the SWG until it is able to maintain.
Have you done a Overnight Chlorine Loss Test?