There will be a spot on the roof with a label indicating where the cables are located. Our label was about 5 inch diameter and in an open area of the roof.
There will also be a switch plate cover inside somewhere with the control cable behind it. This switch plate cover will be close to an electrical plug for the control box. Ours was in the forward closet.
Our RV was a 5'er but I can't imagine it would be much different.
Cedar Creek Silverback
Mazda Miata TOAD for sex appeal