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Routing horn wiring
There are four drain holes in the spare tire well -- two towards the center and one at each outboard end of the well. Yes, of course, these exist for water to find its way out, but this car lives under a cover inside of a garage, and I don't have any plans to drive it in the rain. Since I want to avoid drilling holes in the car, I decided to use the outboard drain holes for my horn wiring. Here you can see how I fitted rubber grommets in the holes to protect the wires' insulation.