Led lighting for bird boxes

Thanks Paul for answering. The box itself is 12V so thats ok. The box has 2 connection-points. One below (at the rear) the box with 3 plugs/sockets(audio.video,power) and 1 in the roof with 4(also 1 for the bulb or lightning). Between roof and nestroom there is a illuminationplate with a little bulb. In the plate is the connection with the power for the bulb.
Best place for the led I think is on the plate. Only problem is , how to connect this to the connection-point. To make a hole or make some room on the side I guess if possible.
I think I give it a trij Greetings Tom.