CONNECTOR

A connector (C) includes a housing (20) formed with terminal accommodation chambers (22). Terminal fittings (10) are inserted into the terminal accommodation chambers (22) from behind. Rectangular tab insertion holes (24) penetrates through a front wall (23) of the housing (20) and allow tabs (61) to be inserted into the terminal accommodation chambers (22). Guide slopes (29, 30) are formed by recessing and tapering an opening edge part of the tab insertion hole (22) on a front surface of the front wall (23). Detection holes (31) penetrate through the front wall (23) and communicate with corner parts of the tab insertion holes (24) so that a probe (50) for conduction test can be inserted into the terminal accommodation chambers (22) from the front.