Z-
According to the 2013 Ford chassis manual (link
here), page 76, Fuse F15 in the Battery Junction Box feeds the "trailer tow park lamps." The relay for that function is, according to page 78, number 8 in the diode and relay module box. These two boxes are mounted under the hood, against the firewall, in the middle of the coach, up high on the firewall.
According to page 81 of the same manual, Fuse 22 in the Passenger Compartment Fuse Panel feeds the trailer tow turn signals. There are two relays on the same panel, number 1 for the trailer left turn signal and number 2 for the trailer right turn signal. The Passenger Compartment Fuse Panel is usually found to the left of the steering column.
This Winnebago drawing (part of the
wiring diagram set for your coach), shows the Ford fuse panel as above the circuit breaker panel that is next to the driver's left foot.