I need to update this thread because I've had a small issue with the turn signal circuit. I had the 7.5 amp turn signal fuse blow on a day trip that I was on yesterday. So I'm suggesting that the 7.5 amp be replaced with the next size up, 10 amp, if you do this mod, especially if rig is used for city driving such as a DD, for example.
Surely you do not want to over load the original circuit. I know it only 2.5 amps but In the interest of reliability and safety I would reduce the overall load. LEDs would make this pretty easy.
YMMV John