It is relatively easy to attach RCA plugs. You can buy them at any Radio Shack. Typically you would connect the negative to the shield and the positive to the center pin. It sounds like you will have to purchase a soldering iron and solder. You may want to use the web to find some notes on "How to Solder" if you haven't done this before. Speaker wires are much less critical with your soldering than if you were soldering a PC board with small components.
In the long run if the soldering seems intimidating, you may want to reconsider remounting the new speakers.
..Doyle
In the long run if the soldering seems intimidating, you may want to reconsider remounting the new speakers.
..Doyle