An electrical harness is formed from a flexible printed circuit board which provides a plurality of conductive tracks. The harness has one or more harness connectors at respective terminating regions of the flexible printed circuit board for joining the harness to complementary connectors. The or each harness connector includes a back-shell and one or more elongate terminals which are supported at a position within the back-shell such that, in use, when the harness connector joins with a complementary connector, the elongate terminals are presented for electrical connect at first ends thereof with mating terminals of the complementary connector. The or each terminating region of the harness has one or more receiving holes extending to respective conductive tracks of the harness.