Up to ch 4,199, only two lights for license plate illumination are mounted in the chrome housing.
The case #665450 and the two glasses #665451 are still available.
Special reversing lights were offered as accessories. For example, this one, #279251. The diffusing glass with VOLVO lettering covers the chrome housing. This includes a switch for the transmission, which is activated when reverse gear is engaged.
Volvo 1800S und 1800E
From ch 4,200, a different, bright chrome housing was fitted. The reversing light is now integrated in it.
The wiring harness has an additional wire for the reverse light.
A switch is mounted on the transmission that is activated when reverse gear is engaged. Which switch is mounted depends on model year and transmission type.
Version 1: #380360 Mounted in the oval aluminum cover above the transmission output at the rear of the manual transmission.
Version 2: #1212591 Installed in the upper transmission cover.
Version 3: #381251 Installed in upper transmission cover.
The lights are accessible from inside the trunk.To replace a bulb, the bulb holder is bent to the side.
The housing #668122 is still available, the glasses #668112 and #668113(2 pieces) you have to search for.
In this model series, the reversing lights are integrated in the housing of both combination rear lamps.
Pos. 3 Housing no longer available.
Pos. 2 Glass #686965 - left and right is still available.