After finishing up more important repairs, I'm now working on the AC. That said, I am in need of advice on how to proceed, as I've never really worked on this part of the car before.

Here is the problem:
- Currently, the vent temperatures are perhaps 10 degrees F lower than outside. Only when driving constantly, like on the highway, will the temperatures will get that "low".

Here's what I know:
- The system is charged (R12), and has no leaks.
- The compressor turns on.
- The electric fan on the condenser does not turn on. The fan itself works, and spins when connected directly to power. However, it will not turn on during use, even on 95F+ days.


How do I go about troubleshooting the electric fan, and the system overall?


Thanks

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1983 240D