According to the item on this page (pdf)
http://www.flightglobal.com/pdfarchive/vie...20-%203054.html
at least later versions of AR 18223 RWR (aka Sky Guardian) had a display.
As for GR.3 I can't find any screen here
http://media.photobucket.com/image/harrier...R3cockpit01.jpg
Can anybody tell me if tanks normally show up as stationary targets? I just had an AR campaign mission and saw not only some trucks crawling about, but also a whole lot of tanks parked in the city. With crews by the look of it. Tanks' position was our mission waypoint but trucks still were the primary target.
We were just about to blast the armour when Two got ten hits by 14mm, lost his left rocket pod and guns, and found himself with 2 Fresco-D on his tail. After I helped the guy out (with rockets still under wings) and sent him home, I unloaded the rest of my ammo on trucks and left too.