When I got the Mpi, it had an aftermarket radio (Pioneer) with Fli speakers on the shelf. The other day, I swapped the head unit for an Alpine one that I have had stored for some time. This morning, the sound quality went awful, then the music went off altogether. Head unit was still on but now I was getting alternator whine through the speakers. Had a fiddle when I got in from work and the radio came back on, but the problem keeps happening. Decline in sound quality/volume, then it crackles and goes off.
Is this possible a bad Earth somewhere?
To be honest, I am considering sourcing and fitting an original radio to hopefully get rid of these problems. :)