Hi,
On the different recce/strike version of the Foxbat,and prior to 1976,there were no lateral nav lights on the air intakes.
Those started appearing after (transparent material?),but I noticed that on the RB/RBV/RBK - starting from 1978 - they are totally black,like made-up of composite materials,so I was thinking maybe they have been replaced by some ECM or SIGINT antennas,as the latest versions were upgraded with the SPS-151 (ECM) and SRS-9 Virazh (SIGINT) systems.
As far as I know those systems were carried internally but I have no clue on their antennas...any idea?