I am installing an aftermarket stereo in my Jeep
 

I need to know how to install this aftermarket stereo and want to do it without an adapter. If I need an adapter please let me know which one I need because I have no idea. I have a 1991 Jeep Cherokee Laredo. https://cimg1.ibsrv.net/gimg/www.che...64b4ce1e6.jpeghttps://cimg2.ibsrv.net/gimg/www.che...c136b849a.jpeg
https://cimg4.ibsrv.net/gimg/www.che...23d84fe29.jpegNew and old connectors
https://cimg6.ibsrv.net/gimg/www.che...ddf7dc8cd.jpegOld
https://cimg7.ibsrv.net/gimg/www.che...7db6fe917.jpegNew
https://cimg9.ibsrv.net/gimg/www.che...d04918d37.jpeg

Use an adapter. Hacking the harness to save 5 bucks is dumb.