This Electrical Schematic Diagram applies for 2003 Honda S2000 car series. Herein you will find comprehensive discussion on S2000 electrical system, repair and troubleshooting. In the beginning of this manual, you will be guided on how to safely handle the electrical system such as connectors, wires and harness; how to safely perform testing and repair of the wires and harness. 5 steps on troubleshooting that should be followed are verify the complaint, analyze the schematic, isolate the problems by testing the circuit, fix the problem, and make sure the circuit works.
This manual covers discussion on body electrical system, relay and control units, power distribution, ground distribution, battery, relay, lights, horn, audio system and etc. Find the complete 2003 Honda S2000 Body Electrical Schematic Diagram here (157 pages of pdf type docs. PASS: wiringdiagrams21.com)