i have a 2010 Jeep wrangler with upgraded infinity system i want to do the Digital method mentioned here (http://www.soundmancaraudio.com/articles/16/the-newest-ipad-installation-methods) but because i have the infinity system i have a small infinity amp running all my speakers instead of an after market amp, the problem with this is there is no RCA imputs on the amp for the remote level controller (http://store.soundmancaraudio.com/product.php?productid=15) to go to only a wiring harness plugging into the amp. what do i need to maybe convert the speaker wires to RCA's? or are there any other solutions?