AJS & Matchless Owners Club

Trying to sort out the Alternator wiring on my 1959 Matchless G3, the wiring diagram shows three wires coming from the Alternator to the Rectifier, via the wiring loom - Dark Green, Light Green and Purple. The problem is the wires coming from my Alternator are Grey, Pale Green and Black/White - see photo below. The numbers on the Alternator are 47122A 3 58 - which according to my 1959 Lucas catalogue, is correct for a 1959 G3.

I'm trying to figure out why the wire colours on the Alternator are different to the wiring diagram and which wires I attach together. Any ideas?

Take resistance readings between each pair of wires.
The colours on a Lucas stator should be L Green, D Green and Green/Yellow (if you have a very early stator the G/Y might be Mid Green)

The lowest reading will be between Light Green and Dark Green, The highest reading will be between Light Green and G/Y.

Note those colours they will match up to your new loom.

I'd be interested to hear if anyone else has this combination of wiring colours on their altenator of a 1959 G3.

Bit of an update on this one. Looking through some paperwork today that came with my bike, I came across a few hand written notes on a copy of a wiring diagram which noted the different colour wires on the alternator and how they should be connected to the loom - all perfectly clear now...

on the subject of alternators,I have just fitted a new 6v unit to my ajay,they are on ebay marketed as early royal enfield.total cost £30.40p including post from India! Only slight issue is the o/d of the stator is 1mm smaller than the miller unit it replaced so needs centralising in the housing.rotor fits fine.

Sorry,typed Miller meant wipac