While lights may eventually be a problem on any trailer, the lights on the Harbor Freight trailer were really cheap, and the wiring was even cheaper. I had problems almost from day one with those lights. Not so on my new trailer, they are much better lights, the wiring is much heavier and enclosed in a shearing, and well grounded. The kit did not come with a dedicated ground, it relies on grounding of the light to the brackets, to the trailer, etc. It ends up not really being grounded by the time it gets back to the vehicle for all practical purposes. I added a ground wire back to the vehicle and it solved some of the light issues.
I bought it originally so I could fold it up and store it in the garage in the off season. It is a great trailer from that perspective if you can live with the tinkering. I barely have time to raft, let alone tinkering, so I prefer to have a minimal maintenance requirement on mine. I guess i paid a premium for that in the new trailer, but hey, I have mor etime to raft now!