Thanks for the reply. I guess i'm even asking myself more questions now. I find a lot of similar setups such as this one I've attached. What is this accomplishing?
Diode goes across the inductive load (fan) not across the transistor. Diode goes for +12 to Collector, same as the fan. Make sure the Cathode (negative) side goes to +12 and the Anode (positive) side goes to the Collector.
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