F150 Problem it's a puzzle

Ok so I bought this 84 Ford F150 (351ci) and there is smoke that comes out of the vents. Now the air conditioner (and heater) doesn't work...well at least the fan anyway. There is no smell so I don't think it's wires burning. I have no idea what it is. I'm not the best mechanic in the world so I really need some help.

:banghead: :banghead:

Do you have a repair manual? autozone.com has some free repair guides available. Need to make sure the drain for the heater box is clean so any water or condensation can drain and not cause electrical problems. Look at a wiring diagram and determine what wires control the fan. Make sure the fuses are good. Test the wires for power. If you need to, test the switch.

Are you losing any antifreeze. I've had plugged drains before water on the floor but no smoke. I had a leaking heater core before and when the fan was running it would blow something that you could think was smoke. I would also look for a resister overheating for the fan if real smoke with odor.

Thanks for the help. I checked it out but I came across a better deal so I'm just gonna rid myself of this demon Ford. Thanks again.