operators manual, parts manual, for tractor will not give you the info you are looking for most likely....
but the "SHOP manual" for the tractor should give you the details of the wiring harnesses, and what wires are fused to this or that. along with "color coding" of the wires. so you can splice into the wiring harness some place to run some dip switches or like to independently turn on/off head lights vs cab front lights. and if you can simply buy a switch for rear cab lights and hook into the wiring harness, or if you need to run a new set of wires, in line fuse and a switch.
pending on fuse size and what fuse they connect to you, you might be limited on what size lights in watts you can connect up for rear lights, vs going with a LED setup on the rear, without having to run new wires.
a rear fender white light pointing down at 3pt hitch for unhooking / hooking up at night is awesome, being you have a cab, might suggest a switch in cab, and switch back on fender for this light.
2 rear high up on the cab lights, that are on swivels (adjust left right, up down) to some degrees. works out nicely as over head spot lights, and out working in the dark,
double check your front cab lights, they might be swivel lights, and you simply need to get up to them and adjust them (left, right, up, down) to make them work for you. if not you might be able to pop the lights out and replace them with a generic 3rd party lights that swivel. for me the front cab lights and FEL work and pointing them just right helps me better in the dark.
double check to see if you have the smaller size alternator vs the larger size alternator that may come for your tractor. extra lights might mean dead battery,
double check wiring harness in rear by fender, it might be for a "rear window washer/blade" or for a trailer connection, and in the mix of wires in the wiring harness there might be a wire for a "caution lights / orange color blinking light" or backup horn.
other words get shop manual for your tractor, and look up the wirining harnesses and color coding, and what is fused and not fused.