While there is a way for you to carry a 70 lb electric bike on the back of a motorhome, there are no ladder-mounted bike racks that have the capacity to carry a 70 lb bike.
Instead you will need to add a trailer hitch, the Multi-Fit Motorhome Trailer Hitch # 5350, which you can do so long as your motorhome has a chassis from 24" to 46" wide, or the Multi-Fit Motor Home Trailer Hitch # 82201 for frame widths from 47" to 71" wide.
Once you have the right hitch you will simply need a bike... view full answer...
For your 1996 Freightliner FL-Series with air suspension I recommend Roadmaster Reflex Steering Stabilizer Item # RM-RBK8-RSSA. This is designed for class A motor homes and is compatible with FL50's and FL60's with Airline suspension or Hendrickson air suspension. view full answer...
In order to add a 7-way trailer connector to your 1999 Freightliner FL-Series you are going to need to first hardwire a 4-way trailer connector like part # 18172 and then a 4 to 7-way trailer connector like part # 37185. In order to power the 7-way trailer connector you are going to need to use part # 12-1-1 (per foot) and part # PK54530. A circuit tester like part # PTW2993 will also come in handy if you do not already have one.
If the trailer has brakes, then using part # 18172 for the... view full answer...