My fan project was on the inside. Two muffin fans mounted on the cooling fins, powered by the door heater (which, unlike a light, runs when the door is closed). The cooling fins act as the ground. Tape and a foam button help keep the positive wire connected to the positive power. I originally had three muffin fans, but it was too much current for the door, and a little melting occurred.
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Full-Timing since 2018 in a 2013 3625RE, 2023 Ford F450DRW with High Output Diesel,
Custom kingpin-mounted hitch receiver for bike rack 2019
MorRyde I/S with 8K Axles & Goodyear G114 Tires on 17.5” aluminum wheels 2020
FlexArmor roof 2021, Starlink
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