The provisions of this title relating to sales and leases become effective at 12:01 A.M. on January 1 1975, but the parties to a consumer sale or lease or renewal or consolidation thereof, made after the effective date of the chapter on administration, may agree in writing signed by the parties that the sale or lease is subject to the provisions of this title applying to consumer sales or leases. If the parties so agree, the sale or lease or renewal or consolidation thereof shall be subject to this title just as if the entire title were effective on the date of the agreement.
S.C. Code § 37-9-101