We recently installed a new furnace, the old unit worked but was undersized for the home, I put the old furnace in my garage with hopes of hooking it up this fall for heating the garage when working on projects this winter, here's the dumb question..... I have everything to get it fired up except I have no idea where the thermostat wires go on the furnace itself and can't find any info on internet except for diagrams on which color goes where, don't care about colors yet first have to know where the darn wires connect on the unit. It's gas not too old, has forced draft, luxaire 80,000