Former "CHiPs" co-star Larry Wilcox found himself on the receiving end of the law recently when he was cited by police for punching another motorist in a highway dispute. Police reported that Wilcox (a. k. a. Officer Jon Baker), who left the popular series after differences with co-star Erik Estrada, lost his temper when the car in front of him began weaving along the shoulder of Topanga Canyon Boulevard. After the two cars stopped, police said, Wilcox, 40, exchanged heated words with the other driver, Jonathan Haig, 18, and pushed the young man into the trunk of his own car. Wilcox was cited with misdemeanor battery and Haig was cited with misdemeanor reckless driving.