This is a sequencer:
It replaces this:
The second picture is of our furnace control board, which is dead. The sequencer is an inexpensive part to replace the dead board.
We have an electrician coming over to wire the sequencer, and we will pay him a fortune to do so. What hurts is that I understand about 90% of how these things work...I just don't know exactly which wires go where. As a friend at church said, "It's that last 10% that burns your house down." Wise words.
I can count on one hand the number of times I have been unable to figure out something mechanical in my adult life. It's not the money, it's the pride that hurts. But at least we'll have heat!