Ok guys ,i got it now ,i have done this before what confused me this time was whether or not there was a switch with the Menards power supply & how i would connect it to the building itself ,i have never had to deal with i think what you call the barrel connector before ,but now i can do this with no problem .
CJACK ,I will look at your suggestion for future reference in case i have to do this again. I just looked on e-bay for those connectors & i already have some of those connectors in my tool box ,now i know what else i could use them for.
Thanks to everyone for your help.