Did you figure out what was causing the resistors to blow. I’m like you on my 3rd fan and it has blown the resistor again. They are also aftermarket fans.Having the same problem with my 2013 1.4. It is the 3rd radiator fan I bought, the resistors in the first two were blown. Something causes high current, I went to a specialist who checked the amperage; waiting for another fan now to hook it up, we gonna check everything step by step. I think it's just impossible that 2 resistors got blown randomly because the fan itself was defective.