Yep, both are marked on the quadrant. Like Jammed Stab pointed out, the Ground Start position is just ahead of the Ground Idle position.
For what it's worth, on the L382 the "G" designation only has to do with the fuselage length not the production series. An L382G is one with 2 fuselage plugs (180 inch total stretch) either when built or as a retrofit. Also called the L100-30 A short fuselage plane would be a L382B (L100) and one with a single 100 inch stretch would be an L382E or F (L100-20)
All our planes are L382G's but some have GTCs and some have APUs which if I'm not mistaken, makes then equivalent to the C-130E and C-130H respectively.