 The controller then repeated most of his instructions, specifically failing to repeat that the flight would be making its approach on the south side of the runway, or right side.The pilots believed they were flying the approach on the north side of the airport, which reflected the information on the approach chart the pilots were using.Thus, when the pilots were instructed to turn right to a heading of 046 maintaining 2,000 ft to capture the localizer for the ILS to Runway 05, out of habit – or possibly due to the detailed approach chart – the captain initiated a left turn to a heading of 046.