I'm not an electronics person, so need a little input here. I'm a new UPS feeder driver and I'm putting together a slip seat radio. I'm looking at car stereos and I'm wondering how to wire it into the truck. I have positive and negative power post that I connect the power to. Have two speaker connections in the truck that I can plug the speaker wires into. I have an antenna wire and antenna I can pug into the stereo. Is it really that straight forward? Just connect to the power, speaker, and antenna connections? Most stereos I'm looking at have an ignition switch wire. What if anything do i do with that?