Hi Kids,

My 1989 325ic radio crackles and pops (as loud as the music)
and the sound has obvious distortion on my drive to work in the
morning.

I listen SOLELY to a mp3 player running thru a cassette
adapter. (but the crackling is still there on am/fm/weather)

After work driving home after the car has been sitting in the San
Diego sun all day and car itself is hot  . .  No Crackling or
distortion, plays loud and clear.

If it's been raining, or I just washed the car, forget it, the
crackling and engine buzzing is way louder than any program material.

A few Facts that may or may not be helpful:

The antennae doesn't go up when I turn the radio on.

There are no blown fuses in the fuse box

Heater fan has no audible interference

The car spends the night in a nice dry single car garage.

There's no leaks or holes in the conversable top or trunk.

I'm assuming I have a ground problem or short
somewhere that fixes itself when the car body has warmed up.
Possibly in the trunk amp harness (I think
there is a trunk amp, YES?)

TIA for any suggestion
O