Got electric antenna to work, finally. There are 3 wires to it and I found the red-black lead, which should supply 12 volts was not doing so. I connected a lead from the boot light and now the antenna works. Found 3 fuses for the radio (including antenna I assume). One of these is in the passenger compartment and 2 in the engine bay. One of the fuses is in the engine bay is in a yellow special surround together with a light fuse. Has anyone else had the power lead to the antenna motor go crook? why the yellow surround for the 2 fuses and how is one supposed to remove them?

there should be tabs holding the fuses into the yellow surround.
the yellow holders can be pulled up to stop power going to those things without having to remove the fuse.
we use them at work so people cannot leave the lights or radio on by accident.