Voltage Regulator 6v Control Box, Lucas Type - MCR2 - 6 Volt
Black box, 2 mounting holes approx 95mm apart centre to centre, F.A.D.E. wire points.
This model is fitted to many 6v systems with a dynamo.
The wiring is normally: F.A.D.E
F = Field (dynamo field coil)
A = Ammeter (power out to battery and/or ammeter)
D = Dynamo (dynamo armature)
E = Earth
OEM: 37097, MCR2, LU37097