How to wire a humidifier to a furnace?

[doublewide]

I put in a pellet stove now my house is too dry. Does anyone here know how to wire a humidifier to a furnace, so that it runs only when the heat is running in the house. I have been looking for some help for a while. My furnace is an Armstrong Air Heat pump Seer 14. Thanks

 

[project240]

I just installed one on our furnace. Very simple. Ours came with a short video showing how to do everything

 

[Later]

A humidifier that only works when the furnace is on producing heat won't put much humidity in the air, especially when you have a stove. In this house we have a high efficiency gas furnace (no stove) and I have connected the humidifier to be on all the time and the furnace fan on all the time. Keeps the humidity here just a bit above 30%. At the other house, where we have the wood stove, there is no way that a furnace based humidifier could keep up. Fortunately we have a damp basement there.