can you help on an install for a 2001 VolVo V70, no factory navigation OEM radio still installed. I need the VSS, Illumination and the Reverse wire locations. Battery is at the rear of the vehicle. I'm not sure if I should purchase the Pioneer ND-BC2 or Audivox. What would you recommend? How about Satellite Radio? I know Pioneer makes the HD, XM,and Sirrius Adapters. Preferences anyone? Thanks awaiting Help Please!