I am sure that I'm not alone in my frustration as to how sloppy the wiring in these things are. I have had the (un)fortunate experience of having to work on this rats nest of wiring during my installation of Ground Control 3.0
and the OneControl
Since I no longer use the monitoring panel after having installed the OneControl tank level module, I decided to re-work the wiring behind the panel and clean it up for the peace (or "piece" as my DW says that I need) of mind that it's not going to short out.
The first two pics show the wiring behind the monitor panel as it came from the factory, with one exception being the HVAC module which I installed. I really expected to find a dead rat tangled in that mess. The third photo is the excess cabling and quick-tap connectors I removed. The last photo is what it looks like now.
For anyone interested, I used this terminal block
from Amazon. It's a decent terminal block although the covers are a bit loose. I attached them using 3M automotive trim tape.
I still need to do some more wire dressing before reinstalling the paneling