I am redoing my system this weekend, and between my head unit, seperate DVD player, Valentine V1, Farenheit scrren, and amplifier, I have way too many power leads that all need to come on when the radio does.. The amplifier runs to the battery with a remote lead to the HU, so that's not a big deal, but what about the rest of it.. I can't very well run those all to the one fuse, can I? thanks

 

I cant comment on the DVD and the Screen, but the V1 should have it's own power source. I like to use the cig lighter because it is only on when the car is. One less thing to turn on and off. If you are using the DVD indash as the radio and everything then by all means you should be fine using the power from the radio for that and the screen. I would.

 

Under the dash, Yellow is constant 12V the smaller red is switched or ignition, thats all i know.

May want to verify that though :-)

Hope that helps.