24v jack plug in MAN

Asking this question for a pal of mine whose 24v hella plug isn’t working on his 61 plate MAN. He’s been told by his local garage that it isn’t fused which I think is rubbish. If I remember rightly then F216 is the fuse for the 24v jack plug. Anyone confirm this please?

One socket fuse look like a pitchfork on the lid
The other socket fuse is a figure 8 with a horizontal line across the top and bottom
Can’t remember which is 12 and which is 24 volts

Yeah that’s the one mate. The figure 8 with a horizontal line is the 24volt one as I thought cheers.