Took me a day and half, but everything is working! Brake by-pass, axxess swc (all buttons work). The axxess didn't work at first, only the volume buttons worked. I was gonna give up on it, but I persisted and following the docs for manual programming, I finally got them working. And, man, the wiring instructions on the axxess was not at all clear. It's a miracle I wired it up correctly. Also, there's not a whole lot of room behind the HU for all the wires. I had to cut most of the un-used RCA jacks on the pioneer harness to get the HU in. I wasn't planning on using them anyways, so just as well. I can always buy a replacement harness later. I put the mic and the iPod adapter in the cubby hole. So I have to open the cubby hole door to use the speaker phone.
Pics later.