Squeak coming from speakers

I picked up my 348 from having its major a few weeks ago, everything new, tensioners, water pump, belts, everything they could do. Also put in a new Optima Battery. Mine was old and going. The car runs great, amazing how much nicer, but then I started to hear a squeak everytime or every third time I would hit my breaks, and its coming from my speakers, most from the passenger side speaker. Well a few days later, my alternator goes out on me. We replace it with a rebuilt one, and all is good, but I still have that noise when the car is nice and warm, and I hit the breaks, I get this squeak coming from my speaker? Anyone have a clue, is it ground? All Grounds have been checked recently?

 

Thanks, yes I am aware that these pins do fail (all the time!) but makes no sense to me that it would happen maybe after 15 minutes of driving and about the third stop (hit my breaks)? Am loosing my mind trying to figure this out, and by the way when I mentioned it to my mechanic (Blackhorse Motors) of course it did not do it for them....

 

HOLLY S*@T, thats alot of nonsense coming from those pins. Ok, I will go through all of them this weekend. Come to think of it you may be right, on a few occasions when I roll down my drivers side window, I here my door locks try to come up or down also? Italian Engineering at its best.

 

OK, did all sorts of work on the car this weekend, went through every wire. Then put everything back together. Took off for a drive, after 15 minutes, the noise came back? But I noticed its only when the disk squeaks, so if I hit the breaks hard, nothing no noise. Now get this, I left the whole door panel disconected. Meaning no speakers, no electrical windows, no power door, and took it for a drive like that again, and still the same noise when breaking slowly and when the break pad squeaks. And again from the speaker when it was not even connected? Am thinking of changing break pads? Any thoughts?

 

OK, finaly changed the break pads on my 348ts, went with the Porterfields from Ricambi, has always good company to deal with! And odly enough, no more squeak coming from my speaker??? This is wierd. But it worked. Also minimal break dust and no squeaks to speak of so far!