I just tried to install an aftermarket radio and it won't power up. I have installed several aftermarket stereos in the past, so I have a good grasp on how the install works. I double and then triple checked all of the wiring, fuses, etc and still no luck.
I'm wondering is the accessory wire is oddly wired, since the factory radio stays on when the ignition is off (until the door is opened).
Can anyone help??