Local craftsmen Dugal Armour and Allan Ward began work on the wall nine weeks ago as part of a redevelopment of the harbour area.
Built in the 1930s, the wall was the last tangible connection with the promenade and Friendly Bay.
The pair had to maintain the integrity of the wall while also using their own style, Mr Armour said.
The light-stands, which may have been installed later, gave line and rhythm to the walkway along the parade, he said.