Those days are over for any of the name brand units. For Pioneer, it is looking for you to wire it into the "positive" side of the parking brake, aka a parking brake dash light, instead of just grounding a wire. And....it wants you to engage, disengage, and engage the parking brake, before you can access a lot of menu settings (or play video while driving). Luckily, on ebay for like ten bucks you can buy a little module that you wire into the radio harness and it fools the stereo into thinking you've done this automatically.