Saab

Please help me. My power supply will not supply enough power to drive the computer.
To start let me give some background information. The Power supply is ACE-916v (160 watt) from MP3car.com. I spliced the power supply into the cigarett lighter adapter so that it would go on when the car was turned on.
The first time I gave it power the fans tried to move, but really couldn't (you could see them start to move, and then stop because they did not have enough power). Then I disconnected everything (two HD's, motherboard, LCD, 2 fans, and CD) and tried to turn on the power supply. The fan in the supply itself started to run because I couldn't unplug that one. I also used a tester to test the output of the supply to the HD connectors. It measured a good 5v and 12v, exactly correct. Next I hooked the LCD to one of the connectors. When I turned the power supply on the LCD showed the 2 black bars that it always does when it is getting power, but no signal. I then again tested the v's coming out of the HD connectors. The wire that was supposed to output 12 v's was now putting out around 5.5v and the wire that was supposed to put out 5v was putting out nothing.
This is where I stand. Does anyone have any ideas what might be wrong.
BEN