The Kenwood is a very nice choice. I actually have the DNX 7100, I love it. The remote wire to turn the amps on from the Kenwood is going to put out a 12 volt signal... but thats ok. All you need to do is put a resistor in-line on the remote wire; but we will get to that in a little.
First you will need two parts:
- The dashkit, which I would buy the one made by Ai part number FM-K554. (It is the doubin din sized kit you will need for the Kenwood 5120)
http://www.aius.net/proddetails.asp?ID=165
- The harness, which is made by Metra. Part number 70-5519.
The harness will come with Two plugs.
A 16 pin main harness and another 8 pin smaller harness. Both will be used.
The 16 pin harness is going to give you your power to the headunit, and the signal to your mach460 tweeters.
Just to refresh on what wires do what in the harness i'll list what they do:
- Orange (Illumination)
- Orange/black (Dimmer)
- Purple (+ Right Rear)
- Purple/black (- Right Rear)
- Grey (+ Front Right)
- Grey/black (- Front Right)
- Yellow (12 volts Constant)
- Red (12 volts Accessory)
- Black (Ground)
- green (+ Left Rear)
- Green/black (- Left Rear)
- white (+ Front left)
- White/black (- Front left)
- Black/white (Factory Amp ground)
Now on the smaller 8 pin plug this plug is what actually sends the turn on signal for the mach 460 amps, and gives the signal to the mach systems woofers.
- Low end Negative left (RCA - white)
- Low end Positive left (RCA - white)
- Black/white (Amp ground)
- Blue/white (Amp turn on)
- Low end Negative right (RCA - Red)
- Low end Positive right (RCA - Red)
- Black/white (Amp ground)
- Blue/white (Amp turn on)
All you do from here basically is hook up the wires from the wiring harness color for color to the back of the radio. Just make sure you hook all your amp grounds (black/white) and your regular grounds (black) together, and hook up the remote wires (blue/white) to the remote output from behind the radio.
Now because Ford amplifiers work off of the mysterious 6 volt amp turn on. Most aftermarket players send 12 volts down their remote wire. To fix this, all you have to do is wire a 1K Ohm resistor In-Line with the remote wires (blue/white). The RCA ends from the smaller plug will plug into your Rear Pre-Outs on the back of your Aftermarket player. You cannot balance but you can still fade.
I hoped I helped you. If you have any questions feel free to ask me. I'll be more than happy to help.
-Trae