If you want to make an off grid camper, then one thing you will need is a source of electricity. Most people will immediately opt for a generator, but these have many disadvantages from solar power. Generators are loud and rely on a supply of fuel that may run dry in extended camping situations. Using solar power in an RV is similar to using it in your home, but it is a bit easier since you do not have to connect to the power grid. There are New Jersey solar installation companies that can do the work for you and save you time and effort.
You will need to have more batteries than you think you will. Remember, even deep cycle batteries should not be drained beyond 50%, so having multiple batteries is a good idea. This will allow you to have power still even when it is night or cloudy.
If you are planning on running appliances in your RV, then you will want to find 12v versions of them. This is because power inverters cause a parasitic loss when the electricity is converted from DC to AC. On top of this, most appliances actually run on 12v and have a converter built in or use a power brick. In these cases, you may be able to find a 12v power adapter. By reducing this parasitic loss, you are going to conserve up to 40% of your power.
You will need a charge controller in order to charge your batteries with your solar panels. If you did not use a charge controller, then your batteries would be overcharged and damaged.
For the most part installing a solar system in your RV is very similar to installing them in your home. The biggest exception is that you will not have to connect it to the power grid if you do not want to.