I need help changin from stock to new deck

I have a 95 maza millenia, and i need help with the wiring for the new deck. I bought a wiring connect from store but it is off or somethin. i would need to connect the red and yellow together to get power can someone please help

I would not pay to close of attention to the color of the wires on the pigtail that plugs into the factory connector. What you need to pay attention to is the location of the wires in the connector. You will need a wiring diagram for your factory radio and the diagram that came with your head unit. when soldering the pigtails together you want to make sure the pin for ign power for example on your factory connector matches the pin location as the one on the pig tail for the radio, the colors may not be the same, but they usually are.
 
But in the case of your not sure if the colors just go tegether is why I like to have the wiring dagram for the factory raido