there are aftermarket RTB(run-turn-brake) controller kits that will do just that. Rear lights become running/brake/turn signals with red lenses or some with clear lens and red bulbs. Kuryakyn made one as well as some other manufacturers, not sure what is still available. The TRIPLE WHAMMY was Kuryakyn's version, I have it on both of my 2007 1300C's, great product. Google run/turn/brake controller and see what you can find. e-bay may still have some also. Custom Dynamics was another company.
To convert to LED, you might need to buy an LED flasher to replace the stock one. so that you do not get the hyperflashing that occurs when you change to LEDs w/out changing flasher.
2007 1300 C Metallic Cabernet----34, 513 miles when purchased 09/2015
2007 1300 C Black----4,506 miles when purchased 12-31-2016