![My HVAC has 6 wires, but I only have 5 pulled to the thermostat location. Since yellow and black are on the same terminal at the unit, can I use a jumper My HVAC has 6 wires, but I only have 5 pulled to the thermostat location. Since yellow and black are on the same terminal at the unit, can I use a jumper](https://external-preview.redd.it/OeI909asuDDBxwLacyBMlqJHVn6xtnHPGA7RmOqA844.jpg?auto=webp&s=1a46d83df0c847ce07be6ef28adc516d0a167e89)
My HVAC has 6 wires, but I only have 5 pulled to the thermostat location. Since yellow and black are on the same terminal at the unit, can I use a jumper
![hvac - Nest thermostat causing condenser unit contactor to chatter when NOT calling for cooling - Home Improvement Stack Exchange hvac - Nest thermostat causing condenser unit contactor to chatter when NOT calling for cooling - Home Improvement Stack Exchange](https://i.stack.imgur.com/6Vpz4.jpg)
hvac - Nest thermostat causing condenser unit contactor to chatter when NOT calling for cooling - Home Improvement Stack Exchange
![Separate boiler and AC, to which does C wire connect for Nest thermostat - Home Improvement Stack Exchange Separate boiler and AC, to which does C wire connect for Nest thermostat - Home Improvement Stack Exchange](https://i.stack.imgur.com/4qz99.jpg)