I have bought a cast resin water fountain. It came the other day. I noticed when putting it together that there are (3) 10 watt halogen bulbs and a small water pump with this unit. Each light has (2) wires coming out of it, they all (6) wires connect to a T" connector, then there are (2) wires coming off the "T" connector and goes to the water pump. From the water pump there are (2) wires that go a transformer then the (2) wires go to a plug end. The plug gets plugged into a power receptacle. When this unit is plugged in, the water pump works and the lights work.

What I would like to do: put the lights only on a timer or wire it in to a photocell. I want to keep the water pump going the whole time, just switch the lights on/off.

How can this be done?