no worries,... ok then,,.. using stock signals, (like i am, hell, Meade is in his IS-f) theres methods.... some costly, aka a JL audio Clean Sweap, or 3sixty.2 or .3. and many others.,..
LOC,.. there you go...
Or a line output converter.....That takes your stock HIGH level sig, and throws down a RCA low level signal........
There is MANY choices even there........
Here is a link to one that i used, and sold,.. and wish to hell i didnt...
http://www.rockfordf...tid=413&parid=1
The RF-BLD was the cleanest LOC i have ever heard. Loved that unit. You just tap in to the signal you want. Make sure its a signal (lower end) you want.
Anyway, They give you RCA (low level, whatever ya wanna say) signal, and You add the amplifer, and drivers, and your banging.........
With my stock HU controling half my car, this was a great way to get some low level inputs to your aftermarket amp. I did sell that, and went a step further, as i wanted more control.
Many many things you can do, stick a after market HU somewhere or use a LOC, or (kinda pricey DSP) to get you some RCA's (low level) sigs.