First pic is of the standard (plastic bodied) PX light assembly, clearly showing an earth connection between the stop and tail bulb holders, which is itself connected to the incoming earth wire.
I followed a similar principle with the old-school (metal bodied) light assembly - second pic, but once connected, the following happens:
Without fastening the assembly to the mudguard, the stop and tail bulbs illuminate correctly, however they will not work together (ie. applying brake, with the side lights on).
When the assembly is fastened to the mudguard, nothing illuminates.
Has anyone done a similar mod to their PX, or is anyone able to advise? I'm property stuck!
Again and as always, any assistance very much appreciated.