Connector

A connector, comprising:

• a housing having opposite front and rear ends and accommodating first, second and third terminals connected respectively to first, second and third wires so that the wires extend from the rear end of the housing, at least the first wire having a diameter different from diameters of the second and third wires, a retainer mounting portion being formed at the rear end of the housing;
• and
• a retainer mounted in the retainer mounting portion of the housing, the retainer being formed from the first, second and third divided bodies, the first and second divided bodies abutting one another along a first division line, the second and third divided bodies abutting one another along a second division line and the third and first divided bodies abutting one another along a third division line, first, second and third through holes being formed through the retainer at the respective first, second and third division lines and defining diameters corresponding to the respective diameters of the first, second and third wires, the first divided body having at least one projection projecting toward the second divided body at the first division line and the second divided body having at least one recess at the first division line, the at least one recess receiving the at least one projection when the first, second and third divided bodies are assembled correctly with one another in the retainer mounting portion, and a sensor-detectable surface discontinuity extending in a front-rear direction on the first divided body at a specified position for detection by a sensor to confirm that the first divided body is in a specified position in the retainer mounting portion.