American and European Caravan Maintenance More than 15 years of experience in this field Only electrical and electronic appliances for all caravans. Class A and B of all types - Caravan electrical installations (approximately) before 2000 differ radically from modern installations. Therefore, it is best to upgrade the electrical installations for older caravans like modern caravans to avoid electrical leakage, to operate the caravan engine actively, and also to make the most of additional batteries.