Hello Stewart
Did you have an heated windscreen ? Yes ? I that case you must start with making the wiring of the windscr longer.
I have the aero s on the 4/4 2001 and the Brookland on the +8 1990
I can send you an some pics if you want, but think it did not work in this topic ?
Stefan
AR 4
4/4
+8
Windscreens are fun