OK so update... I have installed the power wire through the firewall to my amp, grounded the amp, and have spliced into the stock sub speaker wire and installed a loc. I ran rca from the loc to the amp and am not getting signal. Anyone else have this issue? I can't figure out what is wrong. I reconnected the factory sub and it works fine and I know the amp is good and has good ground. I also used a new pair of rca cables and a brand new loc. What is the problem here PLEASE HELLLPPPP! LOL