I've been a trailer technician for over 24 years. I've been asked a few times to build a small test box for customers over the years when they see what I have built to use in the shop.
Remote control trailer light test box. Will control
brakes
hot
back up
left turn/brake light
tail
right turn/brake light
The box runs off a M18 Milwaukee battery.
The remote will light up white when turned on, then light up yellow when something is turned on so you will know what's turned on.
Has fuses to protect the box.
Has 3/4 in LED lights so you can see on the box what's turned on.
