Vehicle on-board electrical device

A vehicle on-board electrical device, comprising:

• a box-shaped housing;
• a circuit board accommodated in the housing;
• an electronic component having a component body and a component terminal;
• and
• a housing connector including a housing connector body and a housing connector terminal, wherein
• a conductor pattern forming an electrical circuit is formed on the circuit board,
• electromagnetic noise is radiated from the electronic component,
• the component body is configured to function as a component of the electrical circuit,
• the component terminal is configured to mount the component body to the conductor pattern,
• the housing connector body is provided on the housing so as to allow an external connector to be connected to the housing connector body from outside the housing,
• the housing connector terminal is configured to mount the housing connector body to the conductor pattern,
• the component terminal includes a first electrical connection portion electrically connected to the conductor pattern,
• the housing connector terminal includes a second electrical connection portion electrically connected to the conductor pattern,
• the vehicle on-board electrical device further comprises a shield member made of a metal plate, and
• in the housing connector, at least the second electrical connection portion of the housing connector terminal is covered by the shield member.