Wiring LED for 120 and 12v power

Mar 13, 2023
Reaction score
United States
I'm building a shelf/tool box to house my hand power tools (drills, impact drivers...) I'm going to have the battery chargers mounted in it, powered through a surge protector/power strip. I want to have 120v power come off of the surge protector, to a transformer that steps it down to 12v to power some integrated LED lights. But i'm wondering if i can also wire it so that if i can't plug in the surge protector, i can plug one of my drill batteries into connector, and use it to power the LED lights.

I'm a woodworker and have very limited experience with electrical. But i was specifically wondering if i could come out of the transformer, to a the input on a light switch, then to the lights. And go from the battery through a diode, and then to the same input connection on the switch. that way if i had a battery in the connector, and plugged in the surge protector, the diodes would prevent he power from entering the battery, potentially damaging it.

Any advice would be appreciated.


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question