Headlights

[VixenPPP]

I don't understand this. Is this the right lamp for the inner light. As you will notice the bulb has one prong. Should it not have two ? like the sealed unit I've taken out. Anyway it doesn't work and when I put the sealed unit back in, it works.

.....Neil

[GrahamB]

From the photo it looks like there is a separate earth connection between the two top prongs.  I would guess that the power has to be connected to the single bulb connection and the bulb earths through its case to the holder which then needs a separate wire to earth.

[Pete Lewis]

you need to get an H4 bulb  not a   H something   bulb in an adaptor 

or  you would have to add an earth to the blade terminal on the side of the adaptor ring 

Peter