My 03 Jayco trailer has the rod and motor under the trailer on the same side as the slide. They are about 12 inches inside the the edge of the trailer. You remove panels underneath to see this. You had to remove the one at the electric motor(about the center of where the slide comes out) and unlatch the brake lever on the end of the motor "first". Then remove another panel to see the end of the rod to be able to turn it. After this process about 300 miles from home, I went home and replaced the electric motor. It was simple to replace the motor after you got the panels off to see the parts.
2003 Ford F350 4X4 diesel drw cc; 2000 Lance 810 truck camper; hardly notice its back there. 2003 Jayco RKS 33, yes it is back there.