The job duties of an RV service technician revolve around working to repair, install, test, and replace parts in a recreational vehicle. Your responsibilities vary depending on your employer and your knowledge/skills. In this job, you may repair plumbing for a bathroom or shower, or install an electrical system that can support appliances. You may work on vehicle-related systems such as towing controls, drivetrains, or engines. This job may also involve carpentry if you work on the interior of the RV and create/repair furnishings, room dividers, or other elements.