I recently busted the RCA inputs on the amp in my trunk.

I was wondering how easy it would be, and where I would need to connect to use the high level inputs instead. Being a college kid I don't have a ton of money to throw around, and I was hoping I could just switch over to the high level and then not have to get my RCA inputs fixed by someone. Basically I want to know what wires to tap into in order to use the high level input. Thank in advance.
-Sean