I used a multi meter set to Volts DC to confirm that this is a switched fuse as can be seen with the ignition switched on (19.14 volts). With the ignition off the reading is zero. If you do not have a multi meter then you do not really need to check this. Try adjusting your mirrors electrically with the ignition off!
The arrow shows the earth point for the multimeter and proves a good point for my hardwire kit earth connection. This is the same bolt that I pointed out at the beginning of the fuse box cover removal.
