I am upgrading my BEM. I think I got a couple of the wires in the wrong pins. Anyway i fixed that but now, everything that is controlled by the BEM won't work (smartlock, power window relay, wipers, courtesy lights)

have i blown up my BEM? are there any internal fuses in it, i need help becuase now my car won't even turn over

Make sure it is earthed well ... I had that issue in my XG ute .... it immobilised the ute indefinitely .. that was fun.