Air not blowing in the front. Checked all fusses. Hit the dash around the auto button once and it worked but now it has stopped and I can't get it to work. Where can I get a wiring diagram or how do I take the dash a part.

There is a separate button on the lower dash labeled RR HTR for the rear heater. If you do not engage the switch it will blow cold air.

Check for a vacuume leak, a small broken hose around the radio or heater controller or around the engine bay. Those snap real easy when they get old and maybe when they ran the wire from the battery or around the radio one got pulled out or snapped. Good luck..

i guess the simple answer is turn on the switch, but you're probably already doing that. if it's blowing cold air when it set to hot, you may have air in the cooling system, or a blockage somewhere, usually in the heater core. if the fan isn't working at all, check fuses. if they're good, check for voltage at the fan itself and replace it if necessary.

the blower resistor is bad, i think its near the passenger floor under dash, it conectect to the blower motor.

when system gets low on refrigerant, the compressor won't engage, have it checked

there a restor on the front frame rail on the drivers side that gos bad it behind the bumper

Well, either you have a blown fuse. (Check your fuse panel)
Or
Your resistor/relay has burned out. (It will be on the passenger side under the dash and will be wired and connected between the controls and the blower motor which should look burnt if bad)
Or
Your blower motor has burned out which can be tested by applying 12 volts directly to it.

The resistor will be around $25 and the blower motor will be much more. You can get everything from a Ford Dealer or an auto parts store once you figure out what is bad.

check for system leacks (lines,fittingis,comperssor,dryer,condensor )

Hope I was avle to help, glad you up and going.

this problem is caused by either a sticking air temperature control blend door or a defective/intermittant blend door actuator motor, to replace either part (both should be checked/replaced) u must remove the entire dash assembly for access to the air ducting works where the parts are, which is around center of dash.