Hi All,
Sorry, but I misread your post and also agree that removing the electric antenna would probably require, at minimum, the removal of the bottom fender mounting bolts and possibly the removal of the fender (also requiring the removal of the door). Depending on the dimensions of the electric motor and how its mounted inside the fender, getting access to the unit would be dependent upon the extent of the opening made when the bottom of the fender is separated and the size of the unit, mounting location and method of attachment, and your accessibility to them from the space made by separating the bottom of the fender.
Since removing the 3 lower fender mounting bolts will allow you to evaluate all else, that would be my first step.
My initial Response:
First, where exactly is the antenna located?
A front fender manual (non-electric) antenna should be able to be removed and replaced through its mounting hole by loosening the top retaining nut and allowing its under-fender mounting to swivel/dropping. Make sure you extend the shaft of the antenna so that you don't allow the antenna to fall into the fender or you will need to undue the bottom fender mounting bolts as suggested previously. Once extracted from the fender, most manual antennas will allow the separation of the antenna cable connected to the radio from the antenna shaft. I would attach the original (in-place) cable to the new antenna shaft and test to make sure it is in good condition. If it is, keep it and reinstall the replacement antenna shaft and you are good to go.
If you find you have a bad cable as well (or just want to replace it with the new cable), I would tape the new to the old along with a piece of wire transitioning both cables as reinforcement and carefully pulling the old out from the inside of the car, pulling the new with it. Connectors and bends leading to the inside of the cabin may require you dismantle some interior panels or components and is the reason I suggest, if possible, to retain the existing cable.
Hope this helps,
Ray(64BJ8P1)