what relay is connected to the radio, power locks, and 12v socket?

What is your question?

I actually ahve two issues. first being the mystery relay. one day i started the car and suddenly couldnt use the locks or radio. if you turn the radio on and turn it up you can here the speakers buzzing a little. i checked all the fuses and none are blown. second is that when i start the car i turn the key to acc and all the lights come on. then i start the car and all the lights but one turn off. the coolant lights stays on for just a few seconds after i start the car. the coolant is full. does it mean anything? please help thanks.