Today I spent a few hours in the garage hiding the f/e lighting & horn wires under the l/s fender.
1st pic, I drilled a 7/8" hole in the l/s rear inner fender panel just below & forward of the hood hinge & ran the wires through a grommet out under the fender.
2nd pic, The harness re-enters the engine compartment through a grommet in the lower part of the l/s front inner fender panel & through a hole in the l/s lower part of the radiator support out to the front of the car.
3rd pic, All the f/e lighting & the horn wires temp in place until I hang the fenders so I can cut the wires to length & install the plug ends.