Re: cd player remote turn ons
I hope you have your ignition problem taken care of. I want to advise you to NOT install a second battery in your car! This is dangerous and hurts the performance of your system.
Normally a battery isolator is installed between the 2 batteries. They cause a voltage drop of about .7 volts and since the rockford amps are unregulated, this will effect their output. A byproduct of this is heat and I have seen many isolators catch fire because they are just too big to install in an engine bay when they are rated at a high enough amperage to do the job.
having a single alternator with a field wire connected to the factory fuse/distribution panel causes more trouble. This wire let's the voltage regulator know when to engage/disengage. Say you are driving on a nice sunny day. Windows down, stereo crankin. The stock battery is doing very little and the alternator has to charge it about 1/4 of the total running time. The 'system' battery is being heavily drained and not getting charged. It will pull current through the isolator and try to raise voltage by lowering the front battery voltage and soo fail. Or imagine it's a dark rainy night, you have the headlights, wipers, blower motor on high, rear defroster going. Your trying to concentrate on driving and the baby is sleeping so the radio is low or off. You are overcharging the 'system' battery and too much of that and they explode! You don't want that to happen either!
You don't need another battery. The only thing you get is more time to listen to your stereo with the engine off. Otherwise you overwork your alternator by doubling it's load. You probably don't need an alternator either. Your amplifiers are rated at much more power than you will ever see. industry standard is to measure power in a controlled environment, (lab) with a 4 ohm shunt resistor on the output, a large, variable, regulated power supply and a 1K test tone. They usually double that number and some even do a 1 second burst to make the number even higher. Music is dynamic and current draw is far less than you would imagine. If there is a power problem, get an alternator and upgrade factory ground leads, an alternator is the only thing that 'makes' power.
I have 2700 watts in my car, sometimes i get crazy and listen above 90db. I have the original alternator from 1994, but did have to change the battery, it was 6 years old and the car sits all summer long (954). My lights don't dim, (my amps do have 1.4 farads internally).
Don't put another battery in your car and if someone at a car audio store recommends another battery, kick them in the nuts and run away.