Block assembly blown again immediately after replacement

Problem started with a reverse jump. Blower motor no longer worked and could smell something burnt. I replaced the blower motor but no luck. I didn't replace the resistor since I found the block assembly was blown in the first circuit. Ordered that and replaced it, but it blew again immediately. Car works fine other than the blower motor in the front doesn't function at all. Is it resistor? Wiring potentially?