Can anyone offer advice on this please?
Optima Yellow top batter in the boot connected in parallel to the one in the front.
Kicker 1000 watt amp connected
Ipod controller (Drive and Play) connected to the Xcarlink via the headphone socket in.
No audio whine from the CD player, the radio, the SD card inserted into the Xcarlink.
Only when the drive and play is running.
Tried connecting it in several ways:
Cigarette lighter connection
Power and Ignition bridged
Power direct from the battery and ignition from the cigarette lighter
Also tried earthing to the body as well as the lighter socket.
I get a whine regardless, albeit at high volume if it is an easy fix I'm happy to do it
Thanks in advance,