Originally Posted by bornking

I also have my nak amp and sub working with an aftermarket deck.
Check my posts you will see where I had issues and how I solved them.

Cheers!

Originally Posted by sha4000

I must admit this is true even though Kansas is vehement that It can be done. I changed out my amp when I changed the head unit but it would be nice to see some type of tutorial since this is one of the most asked questions.

Originally Posted by PureDrifter

all speakers.

Originally Posted by Kansas

The bundle of wires from the aftermarket Kenwood head unit were plugged into the OEM connector leading to the Nakamichi amp under the front passenger seat. The Best Buy installer installed a pin adapter on each wire from the Kenwood and inserted the pins into the appropriate slots in the OEM connector to led to the Nak amp. No "module boxes" or other magic boxes were used although a friend guessed that the pin adapters contained resisters. It looked like a tedious process and the installer wore the kind of lighted magnifying glasses that dentists use. I watched the pin adapters being installed on the workbench from the customer waiting area so I did not get a good look at them.

I popped the Kenwood out of the dash part way after the install so I could extend the USB and aux-in cables to the upper console tray but I did not unwrap the tape that was hiding the connections - didn't want to mess up a good thing since everything including the subwoofer was working perfectly.

Since no wires were cut, the original Nakamichi head unit could have been reinstalled quickly. If fact, that was part of the price - removing the Kenwood and reinstalling the Nak head unit in case I wanted to move the Kenwood to a different vehicle.

I have assumed that the pin adapters are a standard part that Best Buy installers use but I can't guarantee that. As I said in my thread about the Kenwood install, the Best Buy installer was a "mature" (40 something?) Lexus owner who talked about the aftermarket audio/video system he had installed in his LS430 and who seemed especially interested in taking on my project.