This page is a collection of stock wiring diagrams for a variety of Puch mopeds.
Maxi/Newport
This will work or be close enough for just about any Maxi, Newport, Pinto, Swinger, Free Spirit, Magnum, Murray, etc. For additional information about and versions of this diagram, please see Puch wiring.
Early Maxi (1976-77)
Early Early Puch 1973 (3-wire)
Magnum XK
Really awesome PDF file thoroughly explaining Magnum wiring
This would probably also be applicable, or mostly applicable, to Maxis, Swingers, Pintos, Free Spirits, and most other Puch mopeds.