Adding new lights to my Tracker Boat Trailer

I wanted to install some backup lights on my boat trailer. I also decided to add some led lights along the frame rails for added lighting for others to see the trailer better when its dark out. I also removed the standard 4 wire plug and added a 7 wire plug.
Items used:
7-way trailer connector "blade style"
www.ebay.com/itm/7-Way-Traile...
50' 16/3 outdoor wire
www.ebay.com/itm/16-3-SJOOW-S...
8" White LED lights
www.ebay.com/itm/2x-8-White-1...
16" Red LED trailer light
www.amazon.com/gp/product/B07...

[@Bryan-oc5fk]

Marker light across back center is illegal. Needs to be the 3 individual lights, red! It’s stating that your trailer beam is wider than 80 inches!

[@Big_Mike72]

What state?