Featured Thunderbird 650 Electric’s

I'm not familiar with the early Triumphs but the primary cover says alternator to me, have a look at this.

 

Beautiful bike by the way

 

Very nice looking bike, yes it does look like an alternator primary, but it looks like there may be a dynamo ...need a better pic to see.

 

So alternator, you need to find out which system it has as the early alternator models had slightly different wiring to the later models, the diagram Darkman has supplied looks like a dynamo diagram to me, some of the alternators where wired differently so you need to know which yours is wired as.

The above diagram shows an ignition circuit which yours does not have being magneto, i'll see if i can find any of my old manuals.

 

This may help.
https://triumphbonneville120.co.uk/wiring-diagrams.php

 

If you are mechanically minded and keen then looking after and servicing these bike is fairly simple, good luck with your test

 

Love your guard dog

 

Ethan
What a cracking machine you have there. I was looking it over and see you have the oem switches on the headlamp and handlebars. So just trace those wires and you will sort your lights. But I would think it is something fairly simple. Make sure all the connections are clean the battery is good and you are there. Welcome to the Family and do keep us in the picture as to how it goes. You know that bike in that condition is one of the greatest investments you will have.
Ride Safe & enjoy
Joe.

 

Ethan
That's one to ask Darkman. He is the genius among us where restoration is mentioned. Pictures always help if you can get to the area. Perhaps get someone to hold a torch to show it up better.
Regards
Joe.

 

Ethan.
That's a breather pipe. Not sure if it is in the right place but looks right. Your bike should have the electrics under the seat or side panel and I think that will supply your lights charging and most other things. You should have a rectifier and diode there. This is only my thoughts. Do ask some one like DarkMan.
Regards
Joe.

 

I would start with removing the primary cover and see where the alternator wiring exits the case...if indeed it has an alternator fitted, the fact that you cant find the wire is a bit worrying, but removing the cover will at least confirm the wire location and then you can trace its route and find the regulator/zener diode and trace the charging circuit, if you can get the lighting circuit working you should have no problem with the rest...and if you do just put up a pic and your inquiry here and we can help.