93 lexus sc300 headunit

I've been installing a Pyle PLTSD7BT and oh my is the sc300 stereo confusing! It just won't [COLOR="Black"]turn on[/COLOR]. Ive been using this diagram because its the only one that matches my stock system and its color coded as well: http://web.ukonline.co.uk/soarertt/i...diagram_03.jpg I'm not sure about what to plug into the "ground". Right now its wrapped around a screw on a metal surface under the shifter. I figured my problem is probably with the memory battery or ACC wires. Currently I have it wired like this ((not working)): Yellow (battery anode +12v): +B plug Red (12v ACC/Right+): Acc plug Grey (Amplifier power control line): None Black (ground): wrapped around metal screw Blue (power antenna): P/Green and P/BLue wires Pink (Braking line): None I saw somewhere that someone had a 12v amp hooked in the memory battery place and that there is a wire for the braking line under the shifter. I don't know if not having the brake wire in could be keeping it from turning on. Could someone take a look at that diagram and tell me what I am doing wrong and what I should have hooked where? I just want it to turn on! A HUGE thanks in advance ((sorry for making this so long. Just wanted to make sure I covered everything))

Heres the wiring diagram. Sorry http://web.ukonline.co.uk/soarertt/images/hifidiagrams/stereo_wirediagram_03.jpg