the walls 15 16 fig1 and the engaging frame piece 18 it engages a hole 18 a of the engaging frame piece 18 in fig1 the arc shaped brim 10 of the cover 3 is positioned in opposition to a half circular bottom of the harness inserting groove 6 of the base 2 and as shown in fig2 the brim 10 is mounted on the harness inserting groove 6 so as to constitute a circular harness fixing portion together with the projections 8 at the side of the base 2 it is preferable to provide the brim also at an intermediate part in the width direction of the cover 3 in opposition to the projection 9 fig1 at the intermediate part of the harness inserting groove 6 as shown in fig2 by attaching closing the cover 3 on the base 2 the harness inserting groove 6 becomes a harness inserting hole harness inserting part and a harness inserting space 7 becomes a rectangular and cylindrical harness inserting hole harness inserting part as shown in fig3 view of removing the cover 3 a first wire harness 21 is inserted and fixed in the harness inserting part 6 adjacent to the bracket 12 of one side having the circular collar 4 of the protector 1 while a second and third wire harnesses 22 23 are inserted movably in the length direction in a wide harness inserting part 7 adjacent to.