I have installed two of them. No issues that I can recall. They are not premium level in some respects, but then again, they are certainly more than adequate. Still have one on the shelf and will use it when the opportunity comes along. Edit: thinking more about the question......and my answer. The wire gauge and insulation are both ‘generous’ and should handle any anticipated load for the purpose they are labeled.
I put one in my 49 Buick. Went in easy, and everything worked perfectly. Wires are numbered about every 2 feet, and plenty long, good instructions also.