I recently installed this into my car and I've had some inquiries on how it works, so I decided to write up the diagrams and point you to the products you need to make it work and say goodbye to your traditional head unit.
Things you'll need:
- iSimple PolyWire IS75: This has an iPhone connector as well as a 2mm audio connector for other Smartphones. I picked this up off of Amazon.com for $15 + shipping as an 'open box' special.
- PAC LC-1 remote level controller: This is a conventional means to control your audio volume via a knob, since some smartphones won't allow adjustment of the audio while docked. Also around $15 on Amazon.com.
- A cradle for the phone (optional). I used a RAM products iPhone 4 dock, which the last item on this page, less than $10.
- A 2-channel amplifier for running without subwoofers, or a 4-channel amplifier for use with subwoofers. My installation uses subwoofers but I have provided both wiring schematics. Wattage may vary, I use a 200w amp for my project and it handles the sound just fine. YMMV.
- An adapter harness for your stock audio harness. This is optional if you don't give a crap about hacking your stock harness.
Follow the schematics below for hooking up the components. For those who wish to keep headrest speakers, they are interchangeable with either the tweeters or the subwoofers in either schematic. Just follow the instructions and adjust your subwoofer bandpass filters accordingly.
If you can't figure out how to run wires through the cockpit or tap power sources, this probably isn't the project for you.
For installations with subwoofers:
iPhone Stereo Subs.jpg
For installations without subwoofers:
iPhone Stereo No Subs.jpg
There are a few optional components you can add, such as equalizers or bluetooth connectivity, which just replace or are wired in between the components listed here.
End result:
ddmworks.jpg