The electrical system in your RV can seem complex and confusing until you have a basic understanding of how it works. Your RV actually has three separate electrical systems. It has a 12-volt DC automotive system, a 12-volt DC coach system, and a 120 volt AC coach system.
Usually, the only indication of a hydrocele is a painless swelling of one or both testicles. Adult men with a hydrocele might experience discomfort from the heaviness of a swollen scrotum. Pain generally increases with the size of the inflammation. Sometimes, the swollen area might be smaller in the morning and larger later in the day.
Hydrocele is one o the most common cause of painless swelling of testis, it is due to the accumulation of fluid in between two membranes of the testis, it is palpable and fluctuating. Varicocele is also one of the painless conditions of swollen testicle.