I recently removed my Braund antenna. I have replaced the gear that raises the antenna, the arms, and the head over the last 12 years. The antenna was mounted on the right side roof so it could be a very good tree branch catcher.
I travel with no antenna now, except the in-motion dome which is all we have ever used. But, we are down to about 30 days a year in use.
My Braund Concord of the same vintage was wired through a 12v booster on the back wall of the video cabinet. So, I think if your set up is original, and you use the coax lead that attached to your previous tv you may have a power booster in line.
I do have a PDF file for the Installation and Operation of the antenna if you do not have it already. It also has parts listed, but they are no longer available from the manufacturer.
My controller worked, but the topside response problems appeared to be in the wiring. If you are using a jumper wire, then you have already discovered a fuse behind the controller switch panel.
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs