First and foremost honestly what would you do? Would you just bite the $60 and buy another one when it only worked one time? And clearly all the Zex stuff has a one year warranty?...
Please remember you're not talking to a rookie... The first thing I did was made sure the wires lit up my test meter after the second thing being putting it to a known 12-volt source....
I really don't mind sending China Indonesia and Thailand my money as long as I get a part that works more than once lol.... That thing can't cost five bucks to make...