I have an interlock installed into my car and from what I understand the bridge between my ignition/interlock unit and my battery is coming undone. This is ceasing my the battery power to the memory unit of my stereo. Is there anyway to circumvent this from happening so i I don't have the change the settings in it every time I start my car?

subs cut off after playing a while?

I have 2 rockford p2 10"s and running on a rockford 500w amp. After I'm playin loud music sometimes it will start to skip off beat and all my lights flicker really bad when its supposed to bump. Then sounds like its fading. Usually the problems fixed after I let it stay off for a little bit. But what does this mean? I'm gonna take it to a audio store later but I would rather know In advance whats wrong with it. Also my wiring kit is a renegade ren-10

What I need for a stereo system?

Getting a sony deck with two focal 175 acs and a sub and two amps one for sub and one for speakers. In my 76 f150 got a big interstae battery in it. What wiring do I need for the job and with all that do I need a bigger battery. Yes people who might say something about the battery and other crap about how they can only guess yes I get it. Just answer the best you can no crap.

A friend wants me to set up her car speakers for her while still retaining the stock radio. She's already gone ahead and purchased the speakers for her car so I can't really change her set up that she wants. I drew up a wiring diagram that I believe works but I want to throw it to people before I start doing the work. Will this set up work?

Look at the image for the diagram.

So I'm looking to buy some subwoofer(s) for my car. I have an 1987 Honda Hatchback, so you can imagine the speakers aren't that good.?

I'm new to the whole car audio thing so I don't know what brands are the best or what my car can handle. I'm looking online and see I all this stuff about how I should get amps and various other objects but I don't know the first thing about them. If anyone could help me out it would be extremely helpful

Do i need another battery in the trunk or another alernator to power this sound system?

Ok so i have 1 kicker l7 12 inch 750 rms 1500 peak and a pioneer amp for that and i also have 4 audio pipes speakers all 4 adding upto 1000 watt peak and 400-500 rms with a lodgic 1000 watt amp. Will i need anything to power this? I have a 2007 camry le and im going to pay someone to hook everything up so can someone please tell me if i have to change or add anything tonthe car