I would generally agree with quality control issues regarding knock-off brand, Amazon exclusive item(s). I rolled the dice on PartSam item and will say it far superior in quality anf design over thr Command Electronics product used on my 2019 Vegas. A good company would offer full warranty exchange on a faulty design product that had caused many and many RV owners money, time and grief. I can't think of a worse issue with a RV - water damage. We have had to replace a dual diode led marker light that began failing which also came on our Vegas carrying the brand Command Electronics.
Here is my deal. Any time I can do work on my Thor product, I know that it is being done right and done to last. I have more faith in my cutting and splicing wires than another Command Electronics product with a wire harness. My wire splicing will not fail.
My Thor Vegas was assembled in the USA. Some of the worst quality anf quality control I have ever experienced. I love it and understand we purchased a lower end motorhome but some of the quality control stuff is simply installers, Thor employees and fabricators don't care.
On a side note I have had ZERO issues ever returning a product to Amazon. Some of the most lenient return policies ever. Anf if you are worried about a warranty, contact Command Electronics and tell them you want your $/*!y OEM incandescent lights replaced with non-leaking LEDs and see how that goes.