LOL your lucky he didn't cause other damage, the fans cannot be powered directly due to the power they draw, hence why a relay is used.

It depends, the fan motor may be partially seized, hence causing the fuse to blow, but with with the "Bridge" did he use all new wiring or simply splice into the existing wiring, as it could be a wiring problem? Cutting into the headlight wiring was a bad idea tbh!

Martin