I do see that YouTube but I didn't get that installation instruction from the seller I'm asking do I need any aother cord or antenna to plug it in I saw that very easy to plug it in it just unplug the old one and put in the new one
That tube was just an ad it seems, so I edited the link out. Didn't search for others but maybe someone put one up. Maybe that manual has a schematic for something else you need, but yeah, most of the eBay stuff just says plug and play. Dunno.
Answers
Did you get any install instructions from the seller? And check around for YouTubes. Nicoclub has a factory manual for the Nav (pdf file).