Mosala, who left Polokwane City in September having also worked for University of Pretoria, will aid head coach Jean Francois Losciuto at the promotion contenders.
“Yes, Sly is our new assistant coach and has already started working in the club,” says club boss David Thidiela.
Lidoda Duvha are second on the National First Division table with 39 points from 22 games - eight points behind Thanda Royal Zulu.
Losciuto's men will host 10th-placed Real Kings in Limpopo on Saturday.
