You cables look a little bit short and very thick.

I only used Bosch cables on my 103, all other brand fail in a couple of months (including Beru). Bosch has very good cables that are not to thick and very flexible.

I always put the cables on the cap and in the plactic cover on my workbench, not in the car.
That makes it much easier. just close the cover section by section and hold it close with tie-wraps. You can cut the tie-wraps when installing it in the car.
Never use tie-wraps directly on cables.

Rob