How to install a NESA NSD-327 AM/FM/CD/DVD/MP3 CAR RADIO?

well some of the cables are a bit complicated an have no idea where they should go for example all the ones' with speaker i get it ,but there is a cable Taged as Parking [brown cable]and i dont know where it goes next to that cable come 2 others named Subwoofer [blue] and Video Out [yellow] not only that when installing the car radio on the left there are two pairs of cables Taged as Line RR[red] and Line RL[white] the other pair Line FL[white] and Line FR [Red] the weird part im only able to connect only one pair of the two cause there are no other available cable to input .. well they tested it before i bought it and they played a dvd on it and it showed the movie and the audio was clear when the movie played. then when i got home ready to install it i came to complication to install it and when it was installed the picture of the movie didnt show up but the audio i could here ... can u tell what wrong .. if so can u specify some instructions on how to install it .. appreciate it