I bought a used 2015 Ducati scrambler full throttle. The bike has a few aftermarket parts, including the front turning signals. I had to un plug the signals and then re connect them to put on a windscreen. After a a few miles, I noticed the left turn signal was extremely dim. The right turn signal is fine. I checked the connection between harness converters and it was fine. I’m not sure if I had messed with any other wires to have only one dim turn signal.