20-04-2025, 06:34 PM
Hi
Rubies originally had a weird (to modern eyes) setup where one headlamp was switched off and the other was dipped by mechanically tilting the reflector by means of a solenoid.
Nearly all have now been converted at some point over the years to a double dipping arrangement. A Lucas 31284 foot dip switch replaces the original low current rated one. These switches have screw terminals and were used on the Morris Minor etc and are readily available secondhand or as new reproductions.
One wire (Blue) runs from the lighting (PLC) switch to the dip switch common input, which is the terminal nearest one of the two fixing screws. Both dip beams (Blue/Yellow) are wired to one of the dip switch outputs, and both main beams (Red) to the other one. It doesn't matter which way round, the switch just toggles from one to the other every time it's prodded. The earth return from each lamp may be via the body/chassis, or if you prefer via dedicated earth wires running back to reliable earth points on the body/chassis. The colours I quote might vary with the loom maker.
Rubies originally had a weird (to modern eyes) setup where one headlamp was switched off and the other was dipped by mechanically tilting the reflector by means of a solenoid.
Nearly all have now been converted at some point over the years to a double dipping arrangement. A Lucas 31284 foot dip switch replaces the original low current rated one. These switches have screw terminals and were used on the Morris Minor etc and are readily available secondhand or as new reproductions.
One wire (Blue) runs from the lighting (PLC) switch to the dip switch common input, which is the terminal nearest one of the two fixing screws. Both dip beams (Blue/Yellow) are wired to one of the dip switch outputs, and both main beams (Red) to the other one. It doesn't matter which way round, the switch just toggles from one to the other every time it's prodded. The earth return from each lamp may be via the body/chassis, or if you prefer via dedicated earth wires running back to reliable earth points on the body/chassis. The colours I quote might vary with the loom maker.