Before getting into how the cables are laid and how many to do what, There are three different lengths of Forza for that year and seven different build dates, leaving it very difficult to say what you have. Add to that what options your dealer bought for your specific RV and you can see why you may get a wide range of guesses.
If you can post up more info on model and serial number, a check of the wiring diagrams is a good way to locate where the wires are installed.
This is a link to the drawings for one showing a number of different options for wiring:
https://www.winnebagoind.com/diagram/2018/000177027.pdf
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Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!