I don't want to discourage you from adding signals, but no one every seems to pay attention when I use 'em on my motorcycle. In fact, I had one lady yell at me for not using 'em. Then I realized she couldn't see the signals due to angle of sun or glare or something cuz I had them on and they were working.

For some reason, hand signals on any bike (motor or not) is so much more noticed. I have people give me a funny look when I signal with my hands. Seems like enough people don't understand what they mean, but it does get their attention and makes 'em stop to think. Their hamster is much slower than my bike

If you go with lighted signals, continue using your hands.