I guess I'm being a little dense, but I don't remember there being a factory navigation system in 2002-2006 for CR-Vs.Really want to keep the car original. Just bought the car and it's in outstanding condition being owned by and elderly gent from new. Heard there are a lot of issues with the original sat nav units? Found a couple on eBay but they will need updated. Are the wiring plugs there behind the dash ?