Welcome Kymco Owners!
Is there any specific wiring you need assistance with now?
I'd email you my PDF copy but am out of town for another week and don't have access to my computer. Here is a link to the Downtown schematic on the Kymco Italy site that is in English. It would basically be the same as the US version except we do not have the switch to turn the headlight on/off:http://www.kymco.it/media/schede/allegati/Downtown%20300i/impianto.pdf
Many thanks, just what I was looking for. Ps I am in the UK.Al