Might try pulling out the right hand drawer under the bed. The wiring connections are there. Might be a blown fuse or just unplugged from vibration. I have not looked closely out the one in our 4001 but the bed tilt motor in our Winnebago just plugged into an outlet under the bed...
they gave us two 24" flexible drill extensions for just this issue ... if you do not have one, I have seen them at hardware/tool stores. Has a hex end that goes into the motor and then just drill it up or down