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Electrical equipment  (iss. 135)

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Part "Early" "Later" 1945
Head lamps DU142/CVC
(7˝" aperture, flat difusa glass or Black Out mask)
DU42/MAG
(6" aperture, flat difusa glass or Black Out mask)
Simplified system
DU42 with blank instrument panel and change over push button
Ammeter 8-0-8 CZ27
 Domed glass, pointed bezel, illumination through apertures in rear side and reflector
8-0-8   CZ27,
flat glass, rounded bezel, no illumination
no ammeter for above
Tail lights MT110 L-WD-MCT1-V6  
Sidecar lamp  1130 RC 330  
Dipper switch all metal screwed directly on handlebar LU/9AC/1.DP Bakelite with clip assy fixing LU/ 99/L  
Axle floodlight (Big4 only) L-WD-AF1  
Axle floodlight change over switch 31001 or 3100 1A  
Lighting switches 4 pos 1/2 charge U39 (3 pos.) RS39 (4 pos.) U39-L15 and High/Low change-over switch Lucas LU314542
1/2 charge resistor 1/2 charge resistor 1936  
Horn HF935 HF1235
Horn push button 4A or 40SA
Battery (Lead Acid) *1 Lucas PUW7E, alternative Exide
Voltage regulator
 "Lead Acid"
MCR1  L12 (late 1939 and up)  marked "Lead Acid".
"Lead acid" marking was deleted after 1940
MCR1/L32?  no marking!
"Ni-Fe" Battery 
(Nickel Cadmium)
  Lucas C105  "Ni+Fe"  
Voltage regulator
 "Ni-Fe"
MCR1  L9 (1936/37) and MCR1  L5 (1938/39),   marked "NI-FE"  
Battery carrier straps Lucas part without cross brace straps from Lucas with cross brace
Magdyno MO1/4/AG4 .
Dynamo (Anti Clock) E3MD (1936 only) E3HM (Lucas pn 200286) from 1937 onwards
Clips to fit wiring to frame Terry's
Wiring connector*2 connector  Lucas (571395) drawing
Spark plug KLG KS5 KLG M80
Immobiliser 1941 and later *3   Immobiliser
Suppressor*4   Suppressor

Due to conflicting information between spare parts lists and Lucas catalogue, there is a margin of uncertainty in this list.
Pictorial evidence however shows military motorcycles used the screw fixed version dipswitches, changed to clip fixed bakelite version in mid 1940 before being deleted all together around mid 1941. Original 16H 1 inch handlebars can be found with the screw holes in them, for the attachment of the switch. 

*1 Batteries of 12 Amp hour upto early 1940 but marked 10 Amp hour after that.
*2 Wiring connector is shown in same Lucas catalogue under given number.
Three wiring connectors were applied on the early bikes. One in the + lead approx one foot distance from the battery, one approx one foot from the regulator "A" lead and one in the tail lamp lead for easing the disconnection of the rear mudguard end piece for better access in case of removal of the rear wheel. It is not known whether the connector in the "A" lead was applied on all bikes over time.

*3 DME circular B.125, "Immediate action", 21-7-1941, Provision for immobilisation, All M/C's,

*4 Suppressor not certain if and when applied, example was found on almost unrestored machine from March 1939 firmly believed to be left behind in France in 1940.
DME circular B.125, “provision for immobilizing” is dated 21/7/41 for immediate action on already delivered machines!

Page will be completed when more detailed pictures are available.

 

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