Service to Elgin began on May 29, 1903. The branch split off from the main line at Wheaton, and allowed trains from Chicago to reach the Fox Valley city in sixty-five minutes. When opened, the AE&C was able to change its schedules to allow trains to leave 52nd Avenue every fifteen minutes, alternating between Aurora and Elgin. All trains at this point ran locally, stopping at every station. The AE&C briefly considered expanding to Mendota in late 1903, but determined that it was not worth the financial risk. Though cars primarily carried passengers, some early morning cars carried light freight. Notably, the AE&C reached a deal with the "Chicago Record Herald" in October 1903 to distribute the paper to the suburbs along the line.