I have just gota new cd player for my 93 grand cherokee. I only have 1 problem. I don't know how to wire it into the stock amp. I have rca cables, and am not afraid to splice, I just need to get it goin. Thanks

Look online, there should be wiring diagrams somewhere for you

Or get a wiring harness from pretty much anywhere (about $15). You'll be able to wire the CD into the harness wire for wire (instructions with the harness), then plug the harness into the stock one leading to the amp. No sweat. The amp (Infinity Gold, I presume) has built-in line out converters - that's why the harnesses work. I've changed my head unit twice this way with no problem. Since then, though, I've also changed my amp :-) Good luck!