Ron, Thanks for this, If this diagram is from the Enfield handbook it's exactly the same as the one shown on Rob's page for the 16H from 1945 onwards. It's more "illustrated" than the diagrams for the pre '45 bikes in that it shows actual drawings of the various electrical components, not just text, eg "battery", "horn" etc. Probably by '45 generic Lucas diagrams were used for all machines that used the Magdyno and MCR1 reg box. Cheers, Tony
Gents,
I have been studying the electrical wiring of the WD16H latetly after stumbling over two basically unrestored 1939 machines found in the last 2 years with the original wiring still attached and my search to see the differences in colour coding.
The wiring for motorcycles was basically identical for all motorcycles with Lucas equipment apart from the individual makers solutions where to fix the earth connection for the battery and CVC and where the live feed for the horn comes from.
The shown mid war scheme (post Ron Oct 13) can be found in both BSA and Norton instruction manuals and are in line with pre war civilian Lucas wiring diagrams (apart from items like dipper switch and brake lights).
Pre war Lucas wiring diagrams also have two versions wrt Horn live which either is fixed to the ammeter + side or directly to the battery positive.
For early Nortons, the battery earth was fixed to the upper bolt of the battery carrier and the CVC earth was fixed to the grub screw on the magneto CB end plate. Battery neg. to frame is specifially given in one early document and found on the original 1939 machines.
For the later Nortons it is not fully certain as I have seen no description or original example yet. I wired my MC with earth at that point but it was then (45 years ago) the most logical for me.
I am re-writing the website page to show examples of all variations that have existed in more detail and colour codes as far as I have been able to determine them. There are some differences in given colour codes by Lucas and actual applications.
Not yet fully clear yet but it looks like late 1939/early 1940 some things changed in wiring colours.
