A well completion system, including a packer and a lower signal line connector carried on tubing below the packer. An upper signal line connector is carried on an upper tubing section. The upper tubing is adapted for lowering through the packer into sealing contact with the lower tubing and for operatively connecting the upper signal line connector to the lower signal line connector. A lug on the upper tubing and a profile in the lower tubing interact to rotate the upper connector into alignment with the lower connector. An upper signal line extends from a surface location down the upper tubing to the upper connector. A lower signal line extends from the lower connector down the lower tubing to downhole sensors and/or actuators.