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I've still got the moped I had when I was sixteen in 1976. Its a Garelli Tiger Cross.
I rebuilt it some years ago but its been left in storage ever since. Got it out yesterday and it still goes! So while there is still some decent weather I'm going to potter about
on it until someone laughs at the sight of me on it and it goes back in storage. The thing with it is that it does not have a brake light, wasn't made with one. I want to add one but not sure how.
It has a tool box where I could store a small battery and I think there is enough space in the rear light lens to put an LED. I'm not sure how to add a switch to the rear brake pedal and then how to wire it all up. Can anyone help?

Doesn’t have one, wasn’t made with one, no requirement for one.
Not sure if that would hold up in law regenesis, besides that it would make it safer for me.
That's really pretty, that would make a great base for an electric conversion.
If it’s road registered and was originally like that then it will.
If You Want one on there then it’s easy enough.
Something like an old CG125 switch with bracket, spring, two wires and a slightly different tailight(you’ll need a dual filament bulb) connected to the battery will sort it.
Other way is as it runs lights anyway you won’t need a battery just the correct voltage bulb and said light.
You Could Always fit an led inside the existing light with switch/battery if you wanted to keep the original look - without the battery you could get away with but not all are tolerant of AC so you’d be looking at a reg/rec to give DC
As regenesis says should be easy enough to do with a few old bits. Either way it looks fabulous...!
That’s lovely.
Keep it standard and use it.
Best of luck with the rear light, I’ve got no idea what to do with that... sure someone has.
BTW SS1E’s in standard OEM are fetching £7k thereabouts these days...
(wish I’d never sold mine 🤷♂️)
Edit: are you on Facebook? There’s a couple of good pages on there, try them.
That is one of the coolest things I've ever seen.
That guard should keep your Lionels out of the chain.
thanks regenesis, loads of those cg125 switches on fleabay! Reckon I'll use a battery, with an LED it'll be less of a drain too.
That's nice, I had one in blue when I was 16!
Bolt
Love that (I had a KL50)...
FYI - http://www.legislation.gov.uk/uksi/1989/1796/schedule/1/made
Guessing comes under Schedule 12 part 1 exemption :
A vehicle having a maximum speed not exceeding 25 mph;
A vehicle first used before 1st April 1986 and having an engine with a capacity of less than 50 cc;
Assuming there is no requirement why not use one of those cycle brake lights? Something like this: https://www.amazon.co.uk/Zaote-Bicycle-Intelligent-Operating-Rechargeable/dp/B07FVTLPB2
No wiring, bodging or changing it from original.
That bike is uber cool and a real gem. Good on you for keeping it in such pristine nick.
I've had a couple of Gilera's from the same era. Similar architecture and 6V electrics. These both had a rear brake light fitted which did put on a light at the back of the bike. 6V electrics with no voltage regulator meant dim lights at tickover and "candle in a brown bottle" lights at full pelt :o)
You'll need to source a brake light switch and a dual filament bulb holder for the rear light. You'll need to pick up a live feed from the harness and run that through the switch to the rear light fitting. If the rear light is already working the existing neutral wire will be sufficient.
Can we have more pictures please ?
D.
If you must to it.
https://matchlessclueless.com/electrical/lighting/fitting-brake-lights/
I wouldn't bother.
I would fit a proper brake light. As it has a headlight then it should have enough of an electrical system. I have done this several ways in the past. One was to fit a plunger microswitch push for off on the cable stop for the rear brake with a bit of wire plate on the cable that made contact when the pedal was released, another way is to use a front brake cable with an inline switch, or you can sometimes fit a microswitch in the front brake lever. You can also get unversal brake light switches that mount on a suitable point with a bolt and have a clip that fastens to the rear brake lever or cable. Old brit bike places might have one
Swap the single filament bulb holder in the rear light for a dual filament and wire that to whatever switch you want to use. Personally I would have switches on both brakes
Great bike btw - I wanted one when I was 16!
That's one cool looking moped!
Regarding the brake light do what Regenesis says
I absolutely would fit a brake light for your own safety bud.
Car drivers (me included) subconsciously look for a brake light coming on as a sign of deceleration in the vehicle in front. It's instinctive.
On a bike on the roads the odds are already stacked against you,I wouldn't make them worse.lol
Lovely, lovely looking machine by the way.👍
I had a Gilera back in the day , today i would be far more worried about indicators than brake lights , I don't have indicators on my Norton and its something that is getting done soon .
Would not be easy on a flywheel generator system like that but I think you can get LED indicator kits complete online. (I have the full set of Lucas indicators for the Norton , which never had indicators from new)
Go for decent money too
If you change the bulb to dual filament (5/ 21W) you will need to change the bulb holder as well - The pins are offset and there are 2 contacts on the base as well.
Maybe not so straight forward. Bit of electro-mechanical work required.
ps. Really nice machine. Jealous, moi?
(I remember my 175 BSA Bantam loosing out to one of these)
Thank everyone for your help. I'm going to get one of those cycle lights for the short term and meanwhile try to add a switch to the rear brake and wire in to the rear light. I think I am going to have to use a battery as the output is so poor from the magneto it'll be a very dim brake light at low revs. I very nearly sold this recently after losing my job but things are looking up so I'm keeping it for now. 😆
looks great, esp in that Fantic yellow!
I'd fit an LED tail /brake light, had one on my klx250, and wire it up to the pedal, uses very little power
maybe like this https://www.ebay.co.uk/itm/Universal-Motorcycle-Bike-LED-Stop-Brake-LicensePlate-Rear-Tail-Lights-SmokeLen/163829152402?hash=item2624fa7a92:g:6NAAAOSw76xbejS9