This is another straight forward install.  This specific model of CLK320 has a standard radio so all the speaker wires are conviniently located behind the stock deck.  but the deck doesn’t have regular acc wire, so the signal has to be run from somewhere else.  We also installed a BOYO reverse camera.  Everything was good except the signal I grab from the transmission is too low.  I ended up added a little relay to switch the signal to the deck.  Somehow the reverse signal has enough current to drive a relay, but not enough to trigger the deck.   But everything worked out fine.  Note the microphone is flush mounted just right beside the deck for blue tooth and voice recognition so you won’t see a ugly mic hanging any where that ruins the look.