I (The W3bMa5t3r) have been building Laptop Auto Turn-On Modules since mid-2006 for the CarPC community. For more details on these modules and the history thereof, please visit the MP3Car.com Forums. I haven't imported the reviews from my old store, but you can view them here: Old Reviews

Please note that I build these modules to order and in the order received. I also work a full time job (100-120 hours per two week period), so please bear with me if you don't here back immediately. Typical turn around is 3-4 days. All shipping is provided via FedEx. Payment method currently in use is PayPal.
THIS IS NOT A POWER SUPPLY It only turns on devices that use a momentary power switch to turn them on. When "Receiving" power (i.e. turning the car on) it duplicates/replicates you pressing the power button.

This is a question YOU will have to answer using a multimeter and a piece of wire. The process might be slightly different for your system, but the ideal is still the same. Make sure your system is unplugged and that any and all laptop batteries are removed. Using a multi-meter, determine which of the two solder pads on your power switch you need to attach the wires from your jack. Place your multi-meter on the "short", "continuity", or "beep" setting (you meter should "beep" if you touch the leads together). While holding the meter leads to the pads press the switch down. If you get a "beep" you most likely have found the two right pads to solder to. If not, try different combinations till you get the desired results. If you can’t figure this out, feel free to contact me. Take a look at the pics below to help understand this as well. Once you figure out the two pads to use, hook up the power/batteries for your system. Take a small piece of wire and briefly touch one end to each of the two pads you ended up with. If your system powers on, you're good to go. If not, you need to start the process all over.