May 10, 2018on Briggs And Stratton Charging System Wiring Diagram Without Diode. The alternator does not require a regulator. A diode is not included with the alternator so the diode is probably part of the tractor wiring harness. The engine is: Briggs and Stratton Model: 28N Type: A1 Code: since I have zero manuals, no wiring diagram and what seems to be Electrical Schematic & Wiring Diagrams | Vanguard® Commercial Electrical Schematic & Wiring Diagrams. Briggs & Stratton supplies electrical components pertaining to the engine only. However, basic schematics of our alternator systems wired to a generic piece of equipment are available in our: Engine/Alternator Replacement Guide. Ignition/Starter System Diagram. 6-Pin Wire Harness Assembly Installation Guide. Related searches for 12 hp briggs wiring diagram briggs 20 diag 20 hp briggs intek diagram20 hp briggs stratton manual20 hp briggs engine breakdownbriggs and stratton engine wiringbriggs and stratton engine schematicbriggs 27hp engine wiring diagrambriggs andbriggs and briggs tacoma