Lucas 31563 Handlebar Switch Wiring
Since the last article I wrote on my site regarding Wipac Ducon & Tricon switch wiring, I have received more emails from folks looking to get the same diagram but only for the EMGO Lucas 31563 switch.
Honestly, I am really glad to see that many of you are finding these diagrams useful. When it comes down to electronics many folks need as much help as they can get.
I understand that the electrical side of a motorcycle is not a simple task to wrap your head around but having the help when needed is always a plus.
The Lucas 31563 switch was most commonly seen on Triumph 650 unit twins attached to the left hand side handlebar near your clutch lever.
This switch served a very simple function; high / low beam dipper and a push button horn.
Although the 31563 switch was used on Triumph models it was also used on some BSA motorcycles as well.
Early Triumph and BSA models typically mounted the switch on the clutch lever perch while later models attached the switch to the bar using "self taping" screws.
Lucas 31563 Wiring Diagram
The diagram shown below will show you what function and color codes are used to successfully wire the switch.
Keep in mind this diagram is only for the EMGO 31563 switch and not for an original Lucas switch.
If you need a wiring diagram for an original Lucas 31563 switch I would recommend that you refer to a Haynes manual or a factory workshop manual (Triumph preferred)
Click on the image above to enlarge. You can also save, print, download and share this image.
- Horn button
- Dip paddle - high and low beam
The Lucas 31563 switch features 4 wires in total.
- Black = Horn
- White = Neutral Wire
- Yellow / Green = High / Low Beam
Click here to purchase a new Lucas 31563 switch by EMGO
Wiring made easy
There you have it. Now you can wire your new EMGO Lucas 31356 switch at ease. Simple diagrams always make the job easier and more enjoyable.
Should you have any questions please feel free to reach out to us at anytime.
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Thanks for reading - ride safe!Save
Thank you for the wiring diagram for the Lucas horn/dip switch.
Could you please show a similar diagram for the U39 headlight switch. I can’t seem to relate it to any of the Lucas wiring diagrams.
I am restoring a 46 Model G Enfield. Apart from the positive earth which I will change to negative all the 40s and early 50s are pretty much the same setup.
I understand that the U39 replaced the earlier LU/351551 which seems to be unobtainable.
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Hi – I thought this switch was a horn/kill switch and I am attempting to wire as such. I’ve searched all over and can’t find exactly how to wire, but my best guess is Green to ground, White splits to 2 wires one each going to positive side of each coil (bike has 2 coils). No idea what to do with Yellow. When the switch is down the coils are grounded out and the bike stops running.
Any advise as to the correct wiring?
Thanks very much.