Where can you download the wiring diagram for a 1438 Sabre ride on mower?

Deere can supply the drawings of the two harnesses available. This machine was made across the time when reverse safety features were introduced. So it will list a harness and an RIO haress. Take the link below, type in 1438 and click Find, click the plus sign, select Sectional Index, Electrical and items 15 and 16 are the two harnesses.