My 86 Volvo 740 Turbo Wagon has rear fog lights (according to the manual), which are supposed to glow brighter than the normal taillight. Because of the general ugliness of my passenger-side taillight (it was dull and faded) I recently replaced the right rear lens and housing. Prior to replacing the lens I noticed that when I turned on the switch which the manual identifies the TOP red light on each lens was illuminated. However, now that I have replaced the right lens, the top light no longer illuminates when the switch is activated (no matter what combination of lighting I select), yet all of the other lights work as they should (brake, turn signal, reverse, and night lamp). Did I misplace the wires when I restored them to the bulb connectors? The wiring of the left taillight (the one that was NOT replaced) looks a bit different, because there are two leads that are double wires the lead into one connector, where the right side taillight does not have wiring like that.