i recently got 2 6x9 kicker KS693's off ebay for $30 shipped both are desplay models and sound pretty awsome good for now on my puny budget lol.

Sorry lol remove the word recently, it was awhile back but ill go on, They are in my old car at the moment, i wanna replace the stocks in my cavy with these, how should i go about this? as far as reconnecting them? just slice the wires? thats what i did in my old car and they've lasted for 6 months with no problems, but i wanna know how to do this properly. like how do i tell which wires are positive and negative and such, dont wanna connect em wrong any help is welcome.