Running rear brake light from a battery?

[Monty]

Then you would be powering all the electrics via the battery. Most regulators have only a trickle charge facility and won't put enough power in the battery to run all the lights, the battery would flatten, leaving you with no lights. This is why a "Wassell" regulator/rectifier is used as this pumps out more power.[/quote]
The wassel set up powers your lights via the stator with the battery topped up with what's left, the battery acts to top up the stator if you like, on tickover when you would get the lambretter flicker. The main benifit is everything is DC so gauges phone charging and LED lamps all work as they should.
A small bgm type regulator will charge the battery as you ride if you want to keep AC, I would simpley change the brake light to DC via the brake light switch. Simply disconnect the AC feed from the loom and connect it to your battery switched feed. The brake light is the high powered part of the lamp and that's what makes your headlight dim, if it's only lit when you brake a decent battery will cope with it
Sorry mick1 you just covered some of the above

[alanscottj]

Thanks all for your advice - has anyone got a diagram - or could anyone draw one? I might be able to get my head around a diagram

Many thanks!!!

[rosscla]

This is how mine is wired. AF AC stator modified for Wassell regulator, junction box is Indian AC type with all connectors cross connected except the greens

[alanscottj]

So am i right in thinking I need to buy a BGM regulator and put it between the Varitronic stator and the positive side of my battery?

[Donnie]

Um no, there should be a fourth pin already on the varitronic regulator, this is the feed to trickle charge the battery

[Muppet]

Um no, there should be a fourth pin already on the varitronic regulator, this is the feed to trickle charge the battery

+1