I am repairing my car's antenna wiring. Here's the background:
I purchased a new automatic antenna for my 1986 Lincoln Town Car
& had it installed at the car stereo shop to replace the non-functional stock antenna since the car was new, the FM stations had some static and I couldn't receive any AM stations at all; the radio in my Town Car is an aftermarket Kenwood CD Head Unit. The radio is great and have no problems. I took this radio out of my previous vehicle (Toyota Camry) & reinstalled it in the Lincoln Town Car.
When the car is stopped, no engine running and on Accesory mode, I was able to barely hear AM broadcasts. However once the engine is running the AM band buzzes, has hissing & pops with a static barely, making it impossible to hear anything on the radio including local stations in the San Francisco Bay Area.
In the attached photo shows both wiring ends from the aftermarket antenna's cable to the car's existing antenna cable, cut off & was originally sealed with electrical tape. Could I use a coaxial cable splice connection, fuse them together using butt connectors, hard-wire the two ends (in the picture) or just purchase an antenna amplifier booster to fix the radio reception problem? I was also considering this, an inline AM/FM antenna noise filter for automobiles should fix the problem: ebay.com/itm/Car-Fm-Am-Radio-Stero-Inline-Antenna-Noise-Sound-Filter-/220807733152?pt=US_Wire_Harnesses&hash=item33692a9fa0
Another thing, the radio reception in my SUV's (Toyota Highlander) is suberb and no signal problems, as well.