The PAC LC1 is the exact solution that I was thinking of using, but the only concern I have is running long RCAs from the rear (OEM amp where I tap into) into the cabin (to mount the remote control), and then back to the rear again (location of the sub amp). Are there anything that can be place near the amp and only the control signals get routed to the remote...similar in concept to those amp that offers the remote control?

Thanks.