2007 ranger truck no heat a/c etc still working

If you mean a repair manual go to a autozone if you want an owners manual go to ford owners.com and register for free then download the owners manual and you can print it or store it on your phone or computer

Incorrect amount of refrigerant in system likely

With the engine at such low temp I suspect that the glow plugs in the head are not working. They are there to ignite the vaporised fuel in the cylinder and assist in starting. Have them checked out and replace if faulty

They make harnesses to plug into the truck harness and the radio. I recommend this. Because you don't want to cut the wrong wire and fire the computer. IT does happen.

all the controls work on the dash the way they should. but no heat comes out only cold air. even when you manually open the valve on the heater hose. Hot water will pass but no heat in the cab. It seems as though it is a vacuum problem.

Don't waste your money on unnecessary sources and unwanted repairs. Get this manual online under $10-15 and get complete guide on whether to repair or not, service it, and how to repair etc
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These 3 codes have to do with restraint system.
B2292 Seatbelt pretensioner fault.
B2293 Passenger front airbag fault.
B2691 Seatbelt buckle switch circuit fault Ft.driver side.

check out rockauto.com

thermostat or blocked matrix in rad,evan head gaskets could be on the way out