The bulkhead connector has 3 separate plugs. One is lighting, another is engine. 3rd is wiper motor with or without other wires depending on year model.
There are wires for starter relay, washer pump, brake warning, you haven't considered. Then a electric choke assist, a/c, whatever, might be there too.
What you decide you don't want isn't as important as all the things you do want and/or need.
If you have a car and wiring diagrams you can systematically build a wiring harness for it from what materials you have. Trying to do the whole works at one can only cause confusion. For example... There are some who have connected a brown washer pump wire to the ballast resistor thinking it was brown from ignition circuit. The wire from starter relay to NSS is also brown. All the park lamp wires are brown. The terminals used to connect them will identify most of them. Sure they overlap just like the colors repeat.
The terminal on the brake warning lamp is very much like the one on the temp sender. Those are 2 different colors and lengths. You can do this.
