glitchFan2428 actually the volt meter is on all cars expect the 1st and last one . 1st & last car are Trailing cars while the rest are motored powered cars
Seen the forcemeter on C151s also (which only show magnitude but not direction i.e. whether it's power or braking; instead there're 2 more indicator lights (Power & Braking current) to show that) but it's viewable only at an angle via the cutout window on the C151s' indicator panel, as it's smaller