Loose fuse
 

The fuse for my reversing lights is very loose in the fuse box , is there a way to make it fit tighter ?

Pull the fuse out. Lay it flat (just for reference purposes). Then either (or maybe both...I've done quite a few either way over the years) :-
1) with a pair of pliers, twist the left blade a little clockwise, and the right blade anticlockwise. Just enough to give a bit of resistance when pushing it back in
2)Instead of twisting, bend the left one up slightly, and the right one down slightly. Again, just enough to make it tighter.
Simples!

Stewart

Thanks Stewart that seems to have don the trick

Excellent. Glad to be of help.
Stewart