Welcome to Spring Break aka Nightmare Beach (1988) 

Diablo is a biker gang leader executed for the murder of a young woman. A year after his death, it's time for Spring Break. Football players Skip and Ronnie head to the beach, where Skip meets Gail, the sister of the woman who was murdered a year ago. All the fun and glory of Spring Break, however, is about to turn into a living nightmare when a mysterious person in a biker outfit begins to kill people by electrocution. Could it be that Diablo has returned from the dead? - IMDb

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