I believe the blank sections are in fact for rear fog lights. The rear fog light is red, just brighter than regular tail lights, and on the side of the vehicle which is closest to road center (left tail for LHD, right tail for RHD). Provides increased visibility of your vehicle for other drivers coming up behind you in the fog.
73 280 SEL 4.5
[This message has been edited by MikeTangas (edited 10-14-2000).]