2003 Harley-Davidson Touring, Road King. Electra Glide, Standard FLHRC987 Service Manual (P/N 99483-03)

• 100-page professional-grade OEM workshop manual documenting engine, chassis, and electrical specifications for the final-year evolution of these systems
• Covers 2003 Harley-Davidson Touring, Road King, Classic, and Electra Glide, including EFI and carbureted variants
• Original OEM publication P/N 99483-03
• Contains 30 full-page diagnostic flow charts, 12 electrical circuit diagrams, and 8 connector identification tables
• Serves as the primary technical reference for the 2003 model year TSM/TSSM security and charging system diagnostics

Diagnostic Coverage and Circuit Analysis

This service documentation outlines the factory testing parameters and operational metrics for the electrical systems across the touring motorcycle lineup. It provides the necessary reference data to evaluate starting and charging circuits. Mechanics will find detailed specifications to verify whether the alternator, voltage regulator, and starter motor are functioning within factory tolerances. Additionally, the manual breaks down instrument cluster operations, detailing the exact electrical values required for the fuel gauge, oil pressure indicator, and speedometer. Working on motorcycle electrical systems carries inherent risks. Always observe standard shop safety protocols and disconnect the power source before initiating any diagnostic tests outlined in this literature.

System Diagnostics and Electrical Data

Advanced troubleshooting requires accurate baseline data. This publication delivers extensive diagnostic flow charts specifically for the Turn Signal Module (TSM) and the Turn Signal Security Module (TSSM). The documentation details the specific steps required for remote fob assignment, personal code entry, and bank angle sensor calibration. For deep electrical work, the reference sections include complete connector pinout tables for the breakout box interface, alongside precise resistance charts for gauges and sensors. You will find exact metrics for component inspection. For example, voltage regulator checks require verifying ground connection continuity, while the stator test specifies an acceptable resistance of less than 0.5 ohms across the socket. The manual also documents baseline charging system outputs, listing low-output systems at 38 amps and high-output configurations at 45 amps.