S.C. Code Ann. § 19-11-40
Former Section 19-11-40 was entitled "Interest in action shall not disqualify witness" and was derived from 1962 Code Section 26-404; 1952 Code Section 26-404; 1942 Code Section 691; 1932 Code Section 691; Civ. P. '22 Section 707; Civ. P. '12 Section 437; Civ. P. '02 Section 399; 1870 (14) Section 414.