I ran a hidden ant. for the last 8 years, had it mounted on front windshield behind rearview mirror. It was an amplified unit that had a ground wire and a power wire and worked great. The coax was run in the glass weatherstrip so was not visible the ground wire was run to the sunvisor clip screw. Have no idea what brand it was got it off fleebay at the time it resemble this
https://www.crutchfield.com/S-1lHU9J...=GLX&awkw=7564