Thanks, LJ and Billy for your suggestions. Unfortunately, I do not have the instruction manual for the receiver. I have searched the net but I haven't been successful trying to find the manual for a Pioneer stereo receiver SX-205. I have not yet cut the connectors off the wires. I tried to connect RCA Y adapters to the connectors, then I cut the ends off the connectors and tried connecting them to the receiver. I switched the wires every which way. No sound. I did get a message "overload" on one of the combinations.
I actually have 8 ceiling speakers throughout the house. I'll try your suggestions.
Thanks for your help. Once again, I wish I had spent more time with my Dad and brother when they wired "stuff" and fixed their cars!!!!!! When will we ever learn!?