red / white switch

[Keith Webb]

The "white" position was for convoy driving in blackout conditions. It disabled the side/tail and brake lights and switched on the light on the diff so the following driver had a reference. The back of the differential (right hand side) was painted white for that reason. Chevs usually had the whole rear banjo plate painted white, but sometimes this was only a small patch.
The red position was for normal driving.

Hope this helps.