why is my car keyless entry weakens everytime I connect stereo yellow wire to car yellow wire, but works properly if connectd w/ red to red?

what is better for a car radio ?(WAV OR MP3)?

someone asked me to burn sound files from usb to cd so he can use it on his car radio
the problem is i don't know the model of the car and the radio
i know mp3 is better but what the best choice ?

Cost of deck installation for ford Taurus 04?

I have ford Taurus 2004 and I have the standard steered system in it. I hear it's a pain to install it in this car so how much will it be to get it installed professionally with the new parts and everything besides the deck itself?

So I have four regular speakers which sound fine not hooked to an amp, and two subs that I haven't installed yet.

The subs came with a 2 channel amp.

Would I just hook the subs up to the amp and leave the speakers how they are? And how would I do this?

I honestly don't have money for another amp soooo... What's your input?

Best setup for Orion HCCA 10.2" Sub-woofer?

I own a 2004 Ford F-150 Supercrew and I want a box underneath my back seat, I heard just one sub would be all I would need. I was thinking of going with a Kicker ZX1000.1 amp... but idk much about sub amps or even subs in general... I want a great set up that will easily fit underneath my seat, I also read that having the wrong box could damage your sub so what material should the sub box be? If you can please attach a link.. also what are those bottle things that are attached to the amps?