Wiring system

A wiring system, comprising:

• a main wire-side wiring member including a plurality of main wire-side circuits and a plurality of main wire-side connectors, the plurality of main wire-side circuits bundled in a form with a plurality of connection ends, and the plurality of main wire-side connectors connected to the plurality of connection ends, respectively;
• and
• a terminal-side wiring member including a terminal-side connector connected to any one of the plurality of main wire-side connectors and at least one terminal-side circuit connected to the terminal-side connector, the terminal-side connector connected to any one of the plurality of main wire-side connectors so that the terminal-side circuit is electrically connected to at least some of the plurality of main wire-side circuits, wherein
• the plurality of main wire-side connectors include an extra-thin electrical wire connector,
• the plurality of main wire-side circuits include a plurality of extra-thin electrical wire connector connection circuits connected to the extra-thin electrical wire connector,
• the plurality of extra-thin electrical wire connector connection circuits include at least one extra-thin electrical wire having a conductor cross-sectional area of 0.13 square mm or less as an extra-thinnest electrical wire having a smallest conductor cross-sectional area,
• the terminal-side circuit includes a relative thick electrical wire having a conductor cross-sectional area larger than a conductor cross-sectional area of the extra-thinnest electrical wire,
• the extra-thinnest electrical wire is connected to the relative thick electrical wire by connection of the terminal-side connector to the extra-thin electrical wire connector, and
• the plurality of main wire-side circuits include a relative thick electrical wire having a conductor cross-sectional area larger than a conductor cross-sectional area of the extra-thinnest electrical wire.