help with some wiring on a dreamcast

where do you wire the power source to to run some LEDs on DREAMCAST? A picture showing me would be great.

 

I can't take pictures but the connector for the power supply got lqbelled pins for 3.3 & 5 volts along with 12 volts and three ground pins. Depending on the voltage your leds are designed for you can select which pins to use. Most leds are 3.3 or 5 volts if i recall correctly. The connector is really practical to solder on and its section closest to the mobo never enters the power supply connector, making it easy to just solder on the down sections of the pins without rendering the connector unusable.

 

Thanks for the help