I am replacing an existing single switch and a 3 way switch in the same box with one power source. I got everything to work fine.. but there is a wire somewhere that is not right. These lights along with my garage lights/door are on the same braker. When I get the light switches to work the garage lights/door do not. I have 4 blk 2 red 4 white (all together with wire nut) 2 ground, one for each switch. Can't figure out which one is mixed up. I know my hot wire there is only one. Help!