I have a 2017 RT with automatic. I recently bought a harbor freight tag along trailer. I have been looking on here about which hitch and wiring harness to get, and it seems like the more I look the worse I get confused. I’ve heard showchrome has both. I’m sure I want to get an isolated harness, it looks like showchrome is 5 wire, is it hard to go from 5 to 4 wire plug ? Also is showchrome plug and play installation ? Are their hitches good ? Spyder wiring harnesses are appearantly the best, but are so darn expensive. Are their any other good isolated plug and play harnesses, and hitches ? Thanks