He prefers the look with no spoiler.Lol we've been here before...
The OE connection is known for being poor, so chances are someone has cut it off and used the "bullet" connectors shown in your pic. No problem if they are done properly and water tight, but as you blew the fuse, maybe they aren't perfect and shorted.
Regardless it's done now.
Just one question... why remove the spoiler... ?