Yes, That seems to be correct!
The white wire turns into a black with a white stripe when it
appears behind the dashboard. it has an unusual connector, but for the time being, it works by just stuffing the blue wire into the connector (I¨'ll do this properly when everything works).
I have a fieeling the powered antenna may be bad. It goes most of the way up when it is supposed to, but not all the way, and it does not go down unless I give it a "push" before I turn off the tuner. There is only some rattle of gears/cogwheels.
The antenna is not stuck, but by guess is that something has moved or some "teeth" are broken or something...

The local car-accessory-shop has a powered antenna for 20GBP, but it does not look as good as the original.
I'll try to decide wether to attempt to repair the original or buy a new one.

In addition, I discovered that the problem with the empeg-player booting or stopping when I use electricity was caused by the unit being powered by the ignition-sense wire.

Mairus (Escort Cab + Mark II)