Good Sunday everybody, its been awhile since I was last on here. Ive decided I wanted to get back into car audio, and I seen a deal on eBay hard to pass up. As Pioneer is loading out their "NEX" generation headunits it appears the older models are going for a good price. So I picked up a AVH-X5600BHS for my 2010 Dodge Challenger RT (with Boston Acoustic factory installed). I'm not very car audio inclined, so apologizes in advance if I sound off when describing my problem, or whats going on. Friday I got everything in mail from online purchases, all brand new. I got the PAC RP4-CH11 wiring w/ interface, a AVH-X5600BHS Pioneer Double Din, Aftermarket Harness + Antenna. I decided to install that evening, so I went out and connected all the colors together, and plugged the radio in. I go no sound, but it powered on. I read through the manual, and adjusted the numeric dial on the PAC interface box to "7" as called out for a Pioneer/Other on the booklet. Reconnected, still no sound. So I called PAC on Saturday to get some tech support, and we went over the wiring connections I currently have. Which was "White to White, White w/ Strip to White w/ Stripe, Gray to Gray, Yellow to Yellow, Red to Red, ect. And he changed things due to the fact I have an factory amp (Boston Acoustics in the J package Challenger). He went from green to white, purple to white, ect. Here is pictures below of his change. Located in directory: dkrtech.com/images http://dkrtech.com/images/photo%204.JPG http://dkrtech.com/images/photo%205.JPG Here is the PAC handbook explaining why he switched the wires: http://www.pac-audio.com/PACProductData/RP4-CH11/1_Instructions/rp4-ch11_instructions_050913.pdf And still with him on the phone, and switching wires... Including blue w/ white stripe from the RP4 box to the radio, and dil on "7" I still get no audio from my speakers. And I have checked the fader, and it is set to "O" center. And I even moved it to forward, still nothing. Does anybody have an idea what is going on? Any help is appreciated, thank you. Pioneer AVH-X5600BHS manual is located here for reference: http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/AVH-X5600BHS_OwnersManual092513.pdf I tried, and I really don't want to fork out 90 dollars for an install... Because I take it out, plug in the factory radio, and my speakers work. Thanks for any help, Dustin