Trailer Tail Lamp Switch, Backup Light, Turn Signal - Confirmed Working

This is a switch to light up the tail lights of a custom-made trailer. When checking the lights on a boat trailer, you need to connect it to your vehicle to confirm they are working. However, moving the trailer and vehicle around is a hassle, so I created a switch that allows you to light them up directly from a battery. This way, you can also turn on the brake lights with the switch, allowing you to check everything by yourself. This is a homemade item, so please consider it as junk. The battery and trailer are not included in this listing.