The amp meter is also wrong
The original one has a clamp that runs fron top to bottom
All the atermarket ones use a clamp that runs left-right
I cant seem to find any photos of what the switch and ammeter should look like . photos I find on bikes all look like different faces so obviously a lot of wrong ones being used... pay stupid money for this stuff and its wrong is not a nice feeling...
Large chunk removed because it was incorrect
I have not seen an original ampmeter for sale in 40 years
Most use an elongated terminal bolts and a strap that straddles thee two studs with an insulating sleeve
Original are brass bodied
All repos are plastic .
There is no such thing as a standard WM20
Every contract had variations on the basic theme which is what all the fuss is about the correct C number as that identifies what should or should not be there
So some had side car lugs some did not , some had air filters ( several different types ) some did not , some had side stands , some did not , some had panniers some did not. Some had rubber mounted handle bars some did not, some had a 3 position switch & others had a 4 position switch .
From memory there were a few different faces on the amp meters according to the build date and there are 2 different speedo drives .
There was a 7" headlight & an 8" headlight and several different glasses for them let alone the black out screens
So even brand NOS in original army wrapping might not be the right part for you bike