HELP, does anyone know how to connect the heat in a ford escort '88? HELP ASAP

[Lotus War]

i bought a $300 dollar head unit, and wanted it installed, problem with escorts is, there's no way to just exchange them, because they have custom oval-like spacers, to hold the tape deck and heating/cooling controls. so i had to buy a new spacer to fight my head unit, which i did...they installed it, but somewhere along the lines of hooking up the unit and putting it back in, they forgot to reconnect the heating//cooling system wires. as such, i have no heat now, could someone help me out with this problem, the thing is, im supposed to be in pittsburg for the weekend, and i cant even drive with the windows fogging up like im clam baking! Thanks!

[mightymoose_22]

Your best solution is to take it back and tell them to fix it. If they refuse or want to charge you more, sue them.