Before construction could begin, a jetty was built in Weirs Cove, 1 mi (1.6 km) north of the lighthouse,[6] and a flying fox erected to haul the materials up the 85 m (279 ft) cliff.

[6] In 1915, the Commonwealth Government assumed control of all Australian lighthouses, but the takeover of Cape du Couedic did not occur until 1917.

[6] The first motor vehicle visited the lighthouse in 1940, although there was no proper road; up until this point, supplies were delivered to the jetty at Weirs Cove by boat once every three months.

[2][6] The lighthouse is located within the Flinders Chase National Park,[10] south of Rocky River on the south-western point of Kangaroo Island.

[7] The light characteristic shows two flashes every ten seconds, emitted at a focal plane height of 103 metres (338 ft).