The Live Wire.

The Great Maranelli, a stunting circus clown, falls instantly in love when he sees Dorothy Langdon, who does not think too much of him and lets him know it. He is so smitten that his works suffers to the extent that he is soon just a hobo drifting along the open road. When he again encounters Dorothy, she gets him a job as a salesman with her father's light-and-power company, and proves to be a a real "live-wire" salesman. He is then put in charge of the lighting in an amusement park being built under Dorothy's supervision, and trouble comes many directions, guided by Dorothy's cad fiancée who wants to make the stock in the project worthless so he can buy it cheaply.