Disclosed herein is an apparatus for electrically interconnecting parts on the steering wheel and column, respectively, of a motor vehicle by interconnecting an under cover, which is fixed to the column, and a rotator, which is fixed to the wheel so as to rotate relatively to the under cover as the wheel rotates, through a long flexible flat cable with its intermediate portion housed between the under cover and the rotator. The under cover has a junction. Fixed to the under cover is an internal gear having a positioner integral with it. The positioner is inserted into the junction so as to position the internal gear relatively to the under cover.