I've replaced many light switches in my old bungalow, but ran into some confusion today. I am replacing an old push botton with a new push buttom dimmer switch. The new dimmer switch has black and white wires (and ground wire). When I pulled the old switch out, it is connected to all black wires with an additional black wire to a neighboring light switch that will not be changed. What wires get connected to the black wire and what wire to the white wire of the new dimmer switch?