One for Lutin probably. Daughter's Yamaha DT50 (32 years old). If we take a wire direct from the battery into the handlebar main switch then the lights all work, front and rear, main beam and dipped, so there is no problem with the lights themselves or the battery. But there appears to be no power from the generator. There is ignition-fed power going in. Separately, the brake lights work fine too. There is power to ignition and indicators and horn, just not to lights. Going back to the garage for more head scratching buy thoughts please.