Good morning my esteemed pf colleagues!

When you ran the loom in your car, how/where did you take the loom from inside the boot, to outside the car to connect it to the fuel pump?
Before I go butchering the car and tyriying to stick in grommets etc unnecessarily, I wanted to know the easiest and cleanest way to run the new feed, also any comments on where you earthed the new fuel pump loom would also be helpful. My car looks nice and not thrown together, so I want to contiue this!
Also where/how have you mounted the relay?