Gregc216

Hey everyone! Been chasing this one for minute. I have a chirp from the audio system in my E55 only while driving. High pitched chirp after 1 min of driving then silence for about 3 seconds and the sound comes back totally fine. Checking connections at the back of the head unit and they’re good. Took a shot on replacing the amp and it didn’t change anything. Sun roof drains are clear and nothin is leaking on anything electrical. Am i dealing w/ a bad head unit here? Soooo HELP! Thanks for any info or help.