To add context:
The new harness is installed and everything was functioning properly. I’ve also reinstalled the original fuse box and still a dead bronco. Please someone help!
So I did the fuse box swap and now I can’t get the vehicle to start. I know there’s power cause I can hear it when I reconnect the negative terminal, and I know I’ve replaced everything exactly as it was when I took it off. Any suggestions or help with troubleshooting??