I finally got my MMR and hooked up the topper today. I'm getting terrible feedback on the speakers from the topper, sounds a bit like mosquitos, a high pitched hum that varies a bit as the LED's flicker. I can even adjust it by changing the brightness of the topper or stop it altogether by disconnecting the topper LED's
Has anyone else had this, or any ideas on how to rectify it? Would it help if I connected the black to -12V instead of ground (and what the heck is the difference between the two anyhow)?
Thanks,
-K