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Just picked my 1964 smallframe up from garage having had it in for re-threading wher the exhaust bolts on and also some electrics.

The exhaust has been sorted by helicoil hipefully now it wont fall of all the time.

The electrical problem was that the rear brake light and brake light was on constant and when i pressed the the brake lever the entire rear light would go out. The mechanic also noticed that when the brake pedal was pressed the main headlamp would dim regardless of revs (non battery model).

He has told me that they maybe a problem with the "generator" not producing enough electricity to run the lights. By generator im thinking he's talking about the the part behind the flywheel? damn i must learn the parts on my scoot.

Well my theory is that if when the brake pedal is not pressed and both rear light and brake are shining bright the front lamp is not affected then it must be producing enough power so the problem must lie elswhere.

Now I know that i replaced the rear brake cable a few weeks ago and when taking off the brake pedal the two wires connected to the brake pedal came out and im not sure if i put them in the wrong way round? could this be the cause of the rear brake light staying on and switching off when pedal is pressed?

I dont wanna take the brake pedal off again as im crap at tightening up the cable again and i really need the scoot for work.

Any oppinions as always will be really aprreciated. Im also gonna try a different mechanic for second opinion dont want to buy parts I dont need.

Stator plate thats what it is

Any input at all? when i said stator plate i meant thats the name of the part i couldnt remember

yes you are correct on the Stator plate behind the flywheel
It does sound as if you did put the 2 wires on the wrong way round

oh no.....I hate removing it can never ever get the brake cable to tighten back up again oh and thanks for the link to the spark plug site i beleive ive been adding to much oil so not gonna put any in the next time i fill up and ake sure from now on i measure how much any advice on tightening brake cables easily

the brake light switch can be wired up either way round it sounds more like you have a short circuit, what else has been done to the scooter is it or has it got any upgrades to it.

Need more details

not sure i bought it a few months ago with little information i know it has a 150cc sprint engine 1969 6v i beleive all bulbs are 6v when i first got it it didnt have this problem it i only noticed it a week ago and the only time i messed with wiring was when i changed the the rear brake cable.

I think the wiring needs a good look at as there is a few things i have noticed:

headlamp only has either main beam or dipped (not sure which) working when switch to other lighting its nothing and the switches seem to be in reverse order

Horn will sound only when lights are off when lights on its very very quiet (this i notice is a 12v horn).

I need someone used to working with these scooter sto have a look

Where are you? I'd start by getting the flywheel remagnitised to be on the safe side, and then start rewiring the components.

Well the horn problem is cos its 12v for a start