I Have Followed The Diagrams And The Instructions To Change My 3 Way Light Switches. (I Am Changing Them From Beige To White) I Have Connected The Single Black Wire Feed And The Red And Black Wire Feed And Both Switches Work. I Have A 3rd Feed Wire Left Over That Contains A Black Wire And I Do Not Know Where To Connect The Last Black Wire From The 3rd Feed. HELP

The additional wire is more than likely service some other device such as an additional light fixture or an outlet near by. If you have connected a total of six wires & still have on left over, check around either switch for another fixture or outlet. If you have on that is not working you will need to connect the black wire to the constant power supply on the switch. This is general on the black or common terminal on the switch. Next time you change out an electrical device do it one terminal at a time. Also be sure all your terminal screws & connections are tight. Loose connections cause fires.

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