Quote Originally Posted by Jimmytee View Post
It's pretty simple. Just four wires tapped just before one of the plugs that used to plug into the "Audio Unit" Those four wires get wired in a circuit with some resistors and paralleled down to 2 wires that connect to the PAC adapter. Just some really simple soldering and heat shrink tubing. When you get the unit 8BB, I can walk you though it. I can post a schematic of the resistor circuit. Essentially the PAC is looking for a voltage drop (created by the resistors) for each button operation. I am only looking at 4 functions. So when the volume up button is pushed, one resistance/voltage drop and so on.
I did get the PMX 8BB , looks like I'm going to do the same and put it in the stock box where the stock audio unit was. Haven't got the PAC yet, but will be adding it soon. I would definately need the know what 4 wires to tap into. I'm running a few days behind here with other household projects, and hope to jump back on this - this week. Thanks Again for your help.