Amazon.com: Tidal Wake Plug N' Play Underwater LED Boat Drain Plug Light for boats with 1/2" threaded Drains. No Wiring, No Holes to Drill Plugs into Accessory outlet, Add Lighting in Minutes! (
New 4pcs Blue Super Bright LED Boat Plug Light Waterproof Boats Outrigger Lamp 12V 100LM Car Turn Signal Lights - AliExpress
The Typhon Drain Plug LED Light - Custom Boats Unlimited