https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/80926#M18029 <P>Hey&nbsp;wmkay0,&nbsp;</P> <P>&nbsp;</P> <P>Thanks for posting and for the photos. Just to confirm, are these your from the control board of your furnace or AC? What system do you have? Also, what is the make and model of your furnace or AC?&nbsp;</P> <P>&nbsp;</P> <P>Best,&nbsp;</P> <P>Melba</P> Tue, 11 Jan 2022 07:43:39 GMT MelbaDT 2022-01-11T07:43:39Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/79920#M17848 <P>&nbsp;</P><P>Where does the"C" wire connector connect? There is no obvious C wire&nbsp;</P><P>My understanding is that C1 and C2 (black and wires) are unrelated.<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="########################68905397368700.jpg" style="width: 4032px;"><img src="https://www.googlenestcommunity.com/t5/image/serverpage/image-id/4246i304615488C3AA491/image-size/medium/is-moderation-mode/true?v=v2&amp;px=400" role="button" title="16417631462432637868905397368700.jpg" alt="16417631462432637868905397368700.jpg" /></span></P><P> </P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="############91444384958365497358588.jpg" style="width: 4032px;"><img src="https://www.googlenestcommunity.com/t5/image/serverpage/image-id/4248i5507F6442693BA28/image-size/medium/is-moderation-mode/true?v=v2&amp;px=400" role="button" title="16417637591444384958365497358588.jpg" alt="16417637591444384958365497358588.jpg" /></span></P><P> </P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="############29623314210812015993524.jpg" style="width: 4032px;"><img src="https://www.googlenestcommunity.com/t5/image/serverpage/image-id/4249i27CFB155B141B02A/image-size/medium/is-moderation-mode/true?v=v2&amp;px=400" role="button" title="16417637929623314210812015993524.jpg" alt="16417637929623314210812015993524.jpg" /></span></P><P> </P><P> </P> Sun, 09 Jan 2022 21:32:32 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/79920#M17848 wmkay0 2022-01-09T21:32:32Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/80926#M18029 <P>Hey&nbsp;wmkay0,&nbsp;</P> <P>&nbsp;</P> <P>Thanks for posting and for the photos. Just to confirm, are these your from the control board of your furnace or AC? What system do you have? Also, what is the make and model of your furnace or AC?&nbsp;</P> <P>&nbsp;</P> <P>Best,&nbsp;</P> <P>Melba</P> Tue, 11 Jan 2022 07:43:39 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/80926#M18029 MelbaDT 2022-01-11T07:43:39Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/81002#M18053 <P>Wiring at furnace. I resolved the issue after finding several wiring diagrams for the Honeywell aquastat unit.</P> Tue, 11 Jan 2022 13:10:11 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/81002#M18053 wmkay0 2022-01-11T13:10:11Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/81358#M18177 <P>Hey folks,<BR /> It looks like we have come to a solution so I'm going to be locking this thread. If you have any other concerns or questions, please feel free to create a new thread.<BR /> <BR /> Have a great day.<BR /> Garrett DS<BR /> &nbsp;</P> Tue, 11 Jan 2022 19:11:09 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Help-with-Nest-power-connector-wiring/m-p/81358#M18177 GarrettDS 2022-01-11T19:11:09Z