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Avionics Fan Activation?

mobe-e-duck

I'm New Here
Hello Vanians!

Have had some pinning / wiring issues with my newly bought, other-built RV-12. Latest and hopefully last is that the fans don't turn on. They were previously unpowered but, now powered, do not spin. Are they meant to turn on via thermostat or got any leads? I do have the build USB stick and will be looking through it momentarily. :eek: Got a lead as to what section?
 
The fans are wired in parallel with the electric fuel pump. Power to the fans
comes from the AV-50000A fuselage D-Sub pin 28, a wht/red wire. Polarity
matters. The fan black wire connects to ground. Do NOT use a fan mounting
screw for the ground connection. There is no thermostat.
 
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