Method for manufacturing electrical connection assembly

A method for manufacturing an electrical connection assembly with a wiring material including conductors, an insulation coating covering the conductors and a connector including terminals respectively corresponding to the conductors and an insulating housing collectively holding the terminals, the conductors being respectively conductively connected to the terminals while being arranged in an array direction perpendicular to a longitudinal direction of the conductors, the method comprising:

• a wiring material preparing step of preparing a wiring material including the insulation coating made of synthetic resin that is meltable or dissolvable by being heated;
• a connector preparing step of preparing a connector, in which each of the terminals includes an outward projecting portion projecting outward of the insulating housing from a surface of the insulating housing, each outward projecting portion has a conductor connection surface at a position separated from the surface of the insulating housing, and the insulating housing holds the terminals such that the conductor connection surfaces are arranged in the array direction at the same intervals as those of the conductors in the array direction;
• and
• a connecting step of removing the insulation coating from surfaces of the conductors by melting or dissolving of the insulation coating by heating the insulation coating covering parts to be connected set in the respective conductors and electrically connecting the conductors exposed by removing the insulation coating to the conductor connection surfaces by the heating while the conductors are held in a state arrayed at intervals from each other in the array direction.