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Follow the circuit back. It worked for a moment, so the problem is likely small..

Get a wiring diagram to help track the circuit. A voltmeter will be a handy diagnostic tool.
 

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Discussion Starter #22
I have both a meter and a diagram. Sooo frustrating to have it working do nothing to it and now it doesn’t have power at switch.
 

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Discussion Starter #24
Ok another morning of frustration in beautiful NH,,
recap all electrics work except headlamps.
here is what I’ve done.
checked fuses and cleaned terminals
Opened and cleaned Both handle bar switches, and all connectors I could find.
checked ground at pigtail by hooking direct to - terminal on battery=no change
Connected + terminal direct to solder on hi-lo switch and have lights. Put shim in rocker and tested same as above and have lights and hi beam indicator on dash panel.
pulled connector apart connecting start switch to harness under steering head and cleaned it.(see picture)
Checked the blue/white pin and blue/white solder in hi-lo switch for continuity and we have it so no broken wire? However if I connect blue/white Pin in connector to + terminal lights do not come on, I thought with continuity established powering the pin would in turn power the hi-lo switch and turn on lights??????
Does this mean start switch is issue or is there some thing I missed?
6178D632-BA09-4FF9-BE3C-7862FF62363C.jpeg
 

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However if I connect blue/white Pin in connector to + terminal lights do not come on, I thought with continuity established powering the pin would in turn power the hi-lo switch and turn on lights??????
Does this mean start switch is issue or is there some thing I missed?
To which side of the connector did you jump the power? If it is the side which goes towards the start switch that won't light the headlamp. If to the other side of the connector that removes the start switch from the circuit and should power the headlight through the Hi/Lo switch.
 

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Discussion Starter #29
No I put battery power to connector going to light switch With start switch disconnected. my meter shows I have continuity but when I put battery power to it the light does not come on.
 

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No I put battery power to connector going to light switch With start switch disconnected. my meter shows I have continuity but when I put battery power to it the light does not come on.
That would suggest that the problem is still in the Hi/Lo switch or in the wires from there to the headlamp or in the headlamp ground. Have you checked the continuity of the wires from the Hi/Lo switch to the headlamp? Although IIRC you did get the headlamp to light when you jumped to the Hi/Lo switch contacts which would suggest that the problem is still in the switch itself.
 

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Discussion Starter #31
Ok so this fu?>”” thing is haunted, put everything back together so I could take it for Ride on this beautiful day and the damn light came on and stayed on for the duration of the ride.maybe all that cleaning and dielectric grease made its way to where it needed to go?
Thanks for all your help and advise. I appreciate this resource, safe and happy riding to all!!!
 

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You still have a short or broken wire somewhere in the circuit.

In all my 30+ years in the mechanical/electrical world, I have never seen a problem fix itself.

You may need to go through the circuit again while moving, manipulating the wire harness or turning the handlebars lock to lock.
 
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