Aftermarket sub help??

[tr1ck]

Basically I have an aftermarket sub and amp kicking around.
I have the double din audi concert head unit which I take it has a small audi sub in the side panel in the boot, has anyone or does anyone know if you can run an aftermarket sub off the standard wiring or amp?
Thanks

 

[T3nnant]

standard wiring would possibly be to thin to handle power (if its a more powerful sub/amp)

i have the concert single din, and already have the audi sub in car, and i wanted to have a more powerful sub and amp package but iv been told i cant without adding a few other harnesses

 

[sliced]

You can use RCA high low adapters off the aftermarket sub and the remote cable too. Only think you'll need to run is a power cable from the battery to the boot