changing a light from a setting switch to a timer for settings

Wbennetheun · Jun 21, 2015

Hi, I have a 36 inch led bar from fluval and it has both a day and a night setting (blue moonlight).
To change between the two settings there is a standard switch on the side of the light bar, flipped one way it sets the light to day and flipped the other way it turns on the night lights and when left in the middle the light is turned off. I have it plugged into a timer that will turn the light off at night but I was wandering if anyone knew of a way I could replace the switch on the side of the light to one that would change straight from day to night at a programmed time.

Wbennetheun · Jun 21, 2015

Hi, I have a 36 inch led bar from fluval and it has both a day and a night setting (blue moonlight).
To change between the two settings there is a standard switch on the side of the light bar, flipped one way it sets the light to day and flipped the other way it turns on the night lights and when left in the middle the light is turned off. I have it plugged into a timer that will turn the light off at night but I was wandering if anyone knew of a way I could replace the switch on the side of the light to one that would change straight from day to night at a programmed time.

twilliard · Jun 23, 2015

Two SPDT relays would do it. One relay would be your off power while the other driven by a timer would be your modes. Your off relay would just be ran by your 24 hour timer supplying power to your mode relay. A second timer would drive your mode relay.
This would require electrical knowledge and proper safety practices to complete.