Old homemade weight

Addition of LED flashing lights to ground (+ electrical wires)
Added the possibility of coupling a trailer, there are ground connections for the lights socket and a hydraulic socket (perhaps another later)
Added two new types of rusty chains

There's not much left for me to do.

Added several visual configurations, I am doing a configuration for the lights on the ground and a configuration for hooking a trailer to the ground with the cable connection