My stock Harmon Kardon head units radio reception just quit on me. After doing a hand over hand inspection to check for something simple like the antenna is unplugged, I found nothing. I replaced the stock head unit after reading up on the problem and it appears to be common with the stock head unit. I replaced it with a sony marine stereo, elf audio amp and J&M Roker speakers. Still no reception, so I installed the boom audio hidden power antenna which now there is a weak signal but no reception to speak of? My next step is to take the bike to a professional motorcycle stereo installer for troubleshooting, unless someone here on the forum can help me out??