i finally decided to connect my nest thermostat

[prevostrvanlife]

but my old setting is 4 wire 2 are power for my thermostat the other 2 are just 2 wire touching each other too make a connection how do i do this on the nest thermostat external power supply   and it heating but only 2 wire touching  it just a signal wire I've tried the use the same color code and it always missing one wire  signal and wont let me continue so if anybody would have the info that would be great  

[prevostrvanlife]

so im guessing 1 wire in w1 the other in the C then +power on the RH and neg in C

[GabrielaG]

Hi @prevostrvanlife,

Thank you for reaching out to the community. I understand you're trying to connect your Nest Thermostat, but your previous thermostat had four wires, and when you try to connect them using the same color code, you're always left with one missing wire connection point on the Nest Thermostat. I'm ready to help you get this sorted out. 

To determine the most effective troubleshooting plan, could you please provide the following details:

• What type of Nest Thermostat do you have?
• What type of HVAC system do you have?
• Can you please send me a picture of the thermostat wiring? 

I look forward to your response.

Regards,

Gabriela

[prevostrvanlife]

it a gen 4 nest thermostat i have a external power supply and the wire for the heater is 2 wire that connect together that it nothing else  

[GabrielaG]

Hi @prevostrvanlife,

Thanks for getting back to me. I appreciate the info about your thermostat's configuration, and I'm ready to help you with the next step.

To continue addressing, please provide an image clearly illustrating the connection of the wires to the terminals on the backplate.

I look forward to your response.

Regards,

Gabriela

[prevostrvanlife]

like i said it not a labeled connector it power + - and the other wire are just touching so it start the heater it just for continuity 

[GabrielaG]

Hi @prevostrvanlife,

Thank you for the prompt response and the details on your wiring configuration. I'm ready to proceed with assisting you.

To properly connect the wires for your Nest Learning Thermostat (4th generation), you should first verify their compatibility and then use the Google Home app to guide you through the installation process.

For instructions on identifying thermostat wires and completing your Nest thermostat installation, please refer to the helpful articles below:

• Identify a thermostat wire 
• Install your Nest thermostat

Feel free to keep posting if you have more questions.

Regards,

Gabriela

[prevostrvanlife]

ive read everything that why i was asking help cuz my wire are not standard so im guessing this wont work at all 

[GabrielaG · Accepted solution]

Hi @prevostrvanlife,

Thank you for your prompt response. I appreciate you taking the time to answer all my questions and review the information I sent. I'm glad to share more information.

The best option in this case is to contact the Google Support Team. Please refer to this link: Contact Us. 

Feel free to keep posting if you have more questions.

Regards,

Gabriela