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I was advised on another forum that if I removed my ground loop isolators I would get a cleaner signal, so I did. Took the ISO's off the volume was turned up a little so when I started the car to see if I had any engine whine it was fine so I buttoned everything back up.
Then was trying to tune everything and started the car up and with volume completely down could hear slight engine whine that would increase with the rpms.
Question : Would the isolators work back at the amp or do they have to be at the head unit, trying to eliminate pulling console AGAIN.