Appreciate that, but if you ever opened up existing looms you will see a lot of 'connections' right in the loom made in factory, so even factory looms are a bit messy. With availability of Certoplast it is possible to create a 'T' in the loom which is indistinguishable from the original factory wiring. I can assure you.
Even under bonnet and even wiring right near the engine. My wiring for Xenon level sensors, for washer water level sensor, radiator temperature sensor was not in good condition and it is possible to create quality repair that will be as good, if not better than factory wiring.
If you will ever need help to properly do wiring I can meet you and help doing it.
For experiments I would T from existing wires (not the heating elements for now, since they are not important at the moment) and I will use simple WAGO connectors to quickly connect and disconnect the washer jet. When solution will be identified, I'd solder in Audi native connector there, so that you'll have all options to connect: 1. Genuine washers 2. New washers 3. Both
Really looking forward to finding a contemporary, hi-performance washer jet that will point to proper windshield area without modifications to both scuttle panel and the washer itself.