12V DC Plug 5.5mm x 2.1mm, 10 Pairs DC Power Connector Jack Barrel Adapter for CCTV Security Camera and LED Strip (10PCS DC Male Plug + 10PCS DC Female Adapter)

How...McGyver are you willing/capable of doing? If it were me and my car I'd make something like this out of cardboard: https://teqcustoms.com/products/19-forester-window-vents?variant=44163229614317 use this cable to get 12v power from a compatible battery bank: https://www.amazon.com/dp/B0B9FDZX7P use this to wire a few computer case fans* to the power cable: https://www.amazon.com/Connector-Barrel-Adapter-Security-Camera/dp/B0FJ5SPRM9 *red & black wires only, yellow and blue are for RPM sensors, they default to full speed.

I bet you a nickel it's these: https://www.amazon.com/Connector-Barrel-Adapter-Security-Camera/dp/B0FJ5SPRM9/ref=sr_1_5 Do you have a set of calipers? If not, it's definitely in here: https://www.amazon.com/dp/B0DLFMKY5F?ref=ppx_yo2ov_dt_b_fed_asin_title