Mk3 Canadian headlight , dim and dimmer

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p400

p400

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I rode my Mk3 to a club meeting last night, my first "after dark" ride on a Mk3.
Bike runs well, Shorai battery LFX18A1-BS12 on stock 1975 charging components, and the battery seems to be fairing well.
This Mk3 is Canadian eh and the headlight seems to be dipping to the left.
So I went out took photos

Lucas lens, in the glass is marked vertically, 54525462.
The bulb is marked 12V 50/40w 15F.

Maybe it is my old eyes, but this headlight, both up and down, is dim.
Looks wonderful in daylight.
So would you recommend Andover up grade to newer looking bub? or some other unit?

Mk3 Canadian headlight , dim and dimmer
 
Could it be the bulb that is causing "left dip"?



Mk3 Canadian headlight , dim and dimmer Mk3 Canadian headlight , dim and dimmer
 
p400 said:
Could it be the bulb that is causing "left dip"?
Click to expand...

It could be a P36d 'car' bulb. 50/40W (and transverse filament) also suggests it's a car bulb (15F is a mystery so far).

https://www.moss-europe.co.uk/bulb-bpf-p36d-12v-50-40w-clear-lhd-glb415.html
https://www.moss-europe.co.uk/bulb-bpf-p36d-12v-50-40w-clear-rhd-glb414.html

The correct flat cut-off dip motorcycle bulb for that 54525462 headlamp lens is a P36d 45/40W BPF '370' Duplo filament (or later halogen/LED upgrade).

Mk3 Canadian headlight , dim and dimmer

http://www.norbsa02.freeuk.com/goffybulbs.htm
http://www.norbsa02.freeuk.com/goffyWhyNotLEDs.htm
 
Last edited:
maybe 15F is a note for 415 LHD.............and I need a 414 RHD.

Goffy bulbs has some nice bulbs , anyone using the LED as upgrades to a stock BPF?

Mk3 Canadian headlight , dim and dimmer
 
Last edited:
p400 said:
maybe 15F is a note for 415 LHD.............and I need a 414 RHD.
Click to expand...

RHD = Right-Hand Drive, so 414 dips to the left.

https://jollyrogersmotors.com/store...15-BPF-base-Headlamp-Bulb-LHD-or-RHD-New.html
"Lucas part number LLB414 is for right hand drive (RHD) cars. Lucas part number LLB415 is for left hand drive (LHD) cars"

https://www.holden.co.uk/p/12v_bulb_for_bpf_headlamps_dips_to_the_left_50_40w
"12v Bulb for BPF Headlamps - Dips to the Left - 50/40w LLB414"

https://www.holden.co.uk/p/12v_bulb_for_bpf_headlamps_dip_to_the_right_45_40w
"12v Bulb for BPF Headlamps Dip to the Right 45/40w LLB415"
 
I am very unhappy with the illumination of the speedo and tach.
It appears the bulbs are 5w Lucas 501 wedge type.
The original install of the 501 leaves this wedge bulb buried in it holder.

Any known successful upgrades?
Maybe an LED replacement of known exact description.


Mk3 Canadian headlight , dim and dimmer
 
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