2000 ssei audio system

I recently bought my 2000 ssei. I'm think of putting in a amp and some subs but when I disconnected my radio I notied that there was no wires. Is connecting the amp possible. Can anyone help me with this and also I was wondering if I can connect a amp to the factory radio because it has no RCA plugs in the back.

Its possible. You need to look into buying a crossover. nothing is done up front on the radio. Youll have to run the remote wire to something else that turns on with the car. good luck