A wiring module includes: a common power supply line whose one end is electrically connected to a power source; and a power supply branch part provided halfway through the common power supply line, wherein the power supply branch part includes at least one group of a power supply branch line branched halfway through the common power supply line and an overcurrent blocking part provided in the power supply branch line to enter a non-continuity state when current exceeding allowable current flows in the power supply branch line. A wiring module is a wiring module disposed along a fixing target member, and includes: a power supply flat wiring body disposed along a surface of a fixing target member; and a ground flat wiring body disposed along a surface of the power supply flat wiring body on an opposite side from the fixing target member.