Answers to Why does my A/C blow foul smelling air when it first turns on? suggest several fixes that depend on knowing where in the car they are located. I can't determine in any of my cars where the following items are. E.g.:
- Where is the A/C drain?
- Is the heater core before or after the evaporator?
Without buying a service manual is there a way to determine these things for any particular car?