As there is no standard setup for auxiliary lights, there is no real standard for wiring them either. Here are two examples:
Right side - wires are daisy chained toward the rear -

And end up under this stowage box:

On the left side the wires all run forward and end up under the hood:


On this vehicle wires run into same hole as antenna wires:

And under the stowage box as well:

Front wires:
