An electrical connector includes a plurality of contacts, each contact having a first contact point electrically connected to a wiring pattern of a first connection object at one end and a second contact point mounted and fixed onto a wiring pattern of a second connection object by soldering at the other end, and the plurality of contacts is arranged in accordance with a predetermined wiring pattern, and after the second contact is mounted and fixed onto the wiring pattern of the second connection object, portions other than the second contact point of each contact are not fixed and bound with respect to the second connection object.