MC Archive - oldmanhonda Wiring Diagrams. Here is a selection of wiring diagrams taken from my collection of manuals that may help get you through your electrical problems. WIRING DIAGRAMS & INSTRUCTION Wiring Diagrams for 88, 110, 125 and 140cc engine. Wiring Instruction for 70cc, 110cc and 125cc with Yellow Plug. Wiring_for_Yellow_Plug. Wiring Diagrams for Lifan 150cc Engine. Wiring Diagrams for Lifan 200cc Engine. Wiring Diagrams for Lifan 250cc Engine. Lifan_250cc_Diagram. 50cc 150cc Moped GY6 Wire Diagram.