I have thrown a Lifan 125 into my C100 restomod. Runs around just fine. I'm now trying to get some lighting going. I purchased a half wave rectifier from the engine supplier, assuming it'd give some good output, but with no joy. After contacting the engine supplier, they've said its a full wave, floating ground engine. I now have a 4 wire full wave rectifier. I'd like to run full lighting, with a battery. I'm a bit confused after a lot of searching for answers. Can I simply run the reg/rec outputs to a lead acid battery, then run all lighting off the battery? I've dummy run the rectifier and am getting around 6 volts across the positive and ground at idle, then it drops away to nothing when revving. Seems a bit weird to me, but I know very little. I've read up and may need the battery in the system.