Car Head Units How To Install A Second Hand Car Head Unit?

How to install a second hand car head unit? - car head units

Hello, I got a lease, what my cousin did not want either as a gift, but not back with the instructions for wiring or something has come a connector in the connected ", even with half a dozen overhead wires, but I have no idea how to get in touch or my car, driving is a Sony CDX-GT570 and my car is a model 1957 Country Rover, and n has never had a radius of anykind in it.