Modern Vespa

Hi I used the search and didn’t find anything about accessing the bulbs in my headset. I bought this bike in January. Didn’t think it had working electrics. I would like to understand the switch protocol too. I just discovered last night a very faint city? Bulb and bottom taillight bulb glowing when the switch position was all the way to the left. In the other 2 position I get no lights at all. I think both main headlight and brake light may be blown. Anyway how do I access the bulbs in the headlight assembly?
Thanks!
The bike is a ‘65 VBB 2T.

Another

The chrome rim is held on by a screw at the bottom and fits into slots at the top of the headset.

Remove the screw, take off the rim, and the headlight assembly should come out.

The VBB light switch: Middle position is off. One side is the pilot light and taillight, the other side is the headlight and taillight. Not all models will have the pilot light. The 2 position flap switch controls the high and low beams.

Bulbs: Your bike might have a sealed beam headlight (which means you cannot change out just the bulb for the headlight). You can but aftermarket replacements easily for the whole unit. Your bike is most likely a 6V AC system, which means you need to buy AC bulbs and not DC bulbs. These can be found at your favorite online Vespa store. You will also need to buy the correct wattage for the bulbs.

As with all old Vespa's, there can be variability on what you actually have on the scoot vs what the net says it should have.

If you replace your bulbs and everything works, I will be impressed and happy for you.

In the event that replacing the bulbs does not fix everything, this forum will have lots of info. "VBB electrical" will yield many results that will help you troubleshoot.

Another key element will be to understand "load balanced" electrical systems like the one that is most likely on your bike. Failure to understand how a load balanced system works will lead to frustration.

Thank you both for the reply
Sorry for the the upside down pics

This new pic shows the underside of my headlight assembly.

I believe I see a city bulb and another centered bulb. Regarding the bottom; Is it turned and off center and unable to show where the screw heads are or is something else up with it? What do I have to remove to get the trim ring off? Thanks again.

Another pic

Yeah it’s on cockeyed. Someone probably jammed it on. If it’s the original (with a “Siem” mark) be extra gentle. Replacements are available but they don’t make em quite like they used to.

Well nobody ever said the easy way always is the way I do things… I took the assembly apart and messed with the bulb only to realize that the switch was not in the correct position… I was able to get the headlight to shine.

One thing though the headlight housing had a very brittle white type of plastic gasket around it which totally disintegrated when I was taking it all apart. Is that piece still available? Or a rubber ring so the headlight sits squarely in there without rattling around?Now onto the tail light… The filament doesn’t look bad but somehow it doesn’t stay in it’s housing so I will test the bulb next.

Is this the headlight gasket that you are looking for?

https://www.sip-scootershop.com/en/product/gasket-headlight-lens_57259900?q=Headlight%20lens%20gasket

On my VBA, mine doesn't look like the one linked however I couldn't find that style.

No mine [/i]was White
Is this what I need? The one u sent?

Not sure man, things deform over time. Also this may be the solution these days vs what they used to use. I just did a quick google to find a possible solution.

FWIW the brand new Siem I got from SIP is tops. Same with the replacement rear. Proper chrome goodness.

Only problem I have (which is on the to do list)... is the 12v 35w halogen I put in throws the light too high. Thinking it’s because the bulb is probably for a different reflector (?P series) and not sure it can be adjusted. Will have a play at some stage but throwing it out there in case anyone else has already been there done that...