 Slowly the G&SWR took action, and on 1 January 1866 the line was closed to passengers to enable the regauging and track relaying work.Double track was installed, and a connecting line was laid at Paisley, curving towards Glasgow and joining the Joint Line at Greenlaw.The Hamilton Street (Paisley) terminus was closed to passengers and a new Paisley station named Abercorn was opened on the connecting curve, on Renfrew Road.