Changing out the plugs in my kitchen, and I have one that has 6 wires, 2 white, 2 black and 2 red (plus the ground). Now when I go to put the new plug in and wire it the same way and shorts. This plug is next to the kitchen sink a long with 2 others on my kitchen counter the other two have 3 wires 1 white, 1 black and 1 red. Should they be replaced with GFI plugs and if so what do I with the extra red or black wires, I believe they are wired in series with one and other.

