I have been uploading songs to my RioCar for the past few days, and it has been working fine with the AC adapter. I tried to install it today, and I can't get it to power up in the car.

So far I have connected the memory, ignition, ground and dimmer. It turns out my multi-meter is not working (that took a while to figure out), so I had to make do with a LED. Here is what I get.
memory to ground, LED lights up with car off, and on.
ignition to ground, LED is off when car is off, and on when car is on.
dimmer to ground, LED is off when dimmer is at it's brightest, and gets brighter as I move the dimmer to it's dimmest.

So it seems to me that everything is working the way it should be. I checked all of these connections at the connector on the inside of the pullout cage (at the same point RioCar would connect.

Am I missing something? I haven't wired up the remote line yet, as I wanted to make sure the RioCar works first, but I doubt that would change anything. I don't have the mute connected, and I don't plan to.

Any help would be greatly appreciated.