![Need help wiring nest thermostat, black and dark blue wires are loops. I have a heat pump. : r/thermostats Need help wiring nest thermostat, black and dark blue wires are loops. I have a heat pump. : r/thermostats](https://i.redd.it/9eij8wtnze081.jpg)
Need help wiring nest thermostat, black and dark blue wires are loops. I have a heat pump. : r/thermostats
![U wires??? I can't find anything on the black and brown U wires. Any idea where they would go while install the next thermostat? : r/Nest U wires??? I can't find anything on the black and brown U wires. Any idea where they would go while install the next thermostat? : r/Nest](https://preview.redd.it/vzjtqx14bb751.jpg?width=640&crop=smart&auto=webp&s=e7a1aa48c9ab06995081b48eca4ab876a789d7d6)
U wires??? I can't find anything on the black and brown U wires. Any idea where they would go while install the next thermostat? : r/Nest
![Thermostat Wire Ul Rated 18 6 150v Black Sold By The Foot | AC Pro Store | HVAC Equipment, Parts & Supplies for Contractors Thermostat Wire Ul Rated 18 6 150v Black Sold By The Foot | AC Pro Store | HVAC Equipment, Parts & Supplies for Contractors](https://cdn.gateway.acpro.com/original/img2992401.jpg)
Thermostat Wire Ul Rated 18 6 150v Black Sold By The Foot | AC Pro Store | HVAC Equipment, Parts & Supplies for Contractors
![Amazon.com: Syston 18/2 Thermostat Doorbell HAVC Heating Control Cable Wire, 18 AWG 2 Conductors100% Solid Copper Conductors CL3R/FT4/CMR Riser-Rated, UV Resistant RoHS for Low Voltage Applications Use : Tools & Home Improvement Amazon.com: Syston 18/2 Thermostat Doorbell HAVC Heating Control Cable Wire, 18 AWG 2 Conductors100% Solid Copper Conductors CL3R/FT4/CMR Riser-Rated, UV Resistant RoHS for Low Voltage Applications Use : Tools & Home Improvement](https://m.media-amazon.com/images/S/aplus-media-library-service-media/2ff2e736-5131-47d4-9a80-d5bb03fbe259.__CR0,0,600,450_PT0_SX600_V1___.jpg)
Amazon.com: Syston 18/2 Thermostat Doorbell HAVC Heating Control Cable Wire, 18 AWG 2 Conductors100% Solid Copper Conductors CL3R/FT4/CMR Riser-Rated, UV Resistant RoHS for Low Voltage Applications Use : Tools & Home Improvement
![Installing new 2-wire (Single Pole) Thermostats - how to install when there are 3 wires in wall? - Home Improvement Stack Exchange Installing new 2-wire (Single Pole) Thermostats - how to install when there are 3 wires in wall? - Home Improvement Stack Exchange](https://i.stack.imgur.com/JmTci.jpg)