The Fullerton Police Department arrested a man Aug. 20 after his motorhome was found containing 485 grams of methamphetamine, drug paraphernalia, stolen credit cards, and a large sum of cash.   “At about 10:30 in the morning, officers received a call regarding a suspicious occupied RV that was in the area,” Fullerton Police Department spokesman Sergeant Brandon Clyde told The Epoch Times.   When police arrived to the area of South Woods Avenue and West Orangethrope Avenue, they made contact with a few individuals inside the motorhome, Clyde said, and eventually talked to Kevin Dinsmore, 51 years old, who claimed to own the vehicle.   “He was on probation with search and seizure terms so we conducted a probation search of him as well as the trailer, and that’s what led us to [the drugs,] Clyde said.   Dunsmore was subsequently arrested for the paraphernalia and on suspicion of selling drugs.  Police were notified …