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Ahhhhhh okie doke, so the thermostat cables that were plugged into the l&n should i just tape those up? And the 3 cables inside the old thermostat just take out number 2 but leave the other? Thanks

Hi everyone, Thought i would ask for a little help with my nest installation. I thought i would be able to sort it without any issues but then i opened my programmer... My programmer is a honeywell st9400c. It seems to have 3 wires into the live and 3 wires into the neutral. Nothing in 1 & 2...