Ok I just made one diagram, too much to make two, you can use a voltmeter and just keep
the red lead clamped to the trans where the positive cable goes, Or you can use a test light with a long lead clamped to the trans where the cable is.
Or you can use a headlight like I use on equipment and trucks, I can just set it somewhere
where I can see it or just see the light, that way you just have one wire and don't have to fumble with the test light in small places and you can go anywhere without have to keep reclamping the test light, you can even attach a small poker on the end to poke through wires with.
Try using the headlight way I think it is the easiest.
You might have blown a circuit breaker, they are on the drawing, just move along with
the one wire to test each spot, one wire has to be clamped to the trans always you will see it, and the blue wire needs to be clamped to the neg post on the battery by itself, all you have to do is check what I have on there.
You'll want to have the key switch on also.
Let me know how far you get, this is just to get the lights working from where the power
source starts so we know there is no problem with the rest of the wiring.