What is the PETG wrapping you used? Where did you get it? It looks very organized.
You can get it from most computer modding outlets; it is typically used for sleeving power supply cables but it works well for any wiring jobs you want to tidy up. This site has a pretty good selection but you can google PSU sleeve and find many retailers.
I used it on the float sensors and dimming leads for the lights as well.
