Hy Josh_53GMC, Canadian serial number 1943406096 breaks down as follows
1 - year 1951
94 - GMC 3/4 - 1ton
34 - pick-up delivery 8,800 lbs. g.v.w. 137" wheelbase
06096 - is the vehicle number
1951 Canadian GMCs other than the 9700 series [3 ton] were powered by Chevrolet engines, and all but the 9700 series [3 ton] were six volt negative ground, hope that clarifies.