I removed the roof A/C from my 1985 Dolphin and am ready to install a 3-speed Fantastic Fan in the A/C hole as well as replace the middle non-electrical vent with a Fantastic Fan. I think I'm clear on the basic install, but I would like advice on what to do regarding wiring the fans to 12v. There are light fixtures near both holes, so I could wire from the light fixtures. Do I run wire externally along the ceiling or is there a trick to doing it concealed? (I'm fine with both) Additionally, would it make sense for me to use the existing wiring (110v) that powered the A/C? I suppose I could disconnect it from the electrical box and hook it up to the battery. Anyone dealt with these things before? I appreciate any advice. Thanks!