Welsome to the forum - please tell me if I understand you correctly:
1. You would like to add handlebar mounted USB power port - is this for cell phone charging ?
2, You would like to add turn signal indicators - rear mounted turn signalsrequired - is it OK not to have front mounted turn signals with rear only ? Is this for additional rear safety from other bikes or from vehicle traffic ?
3. Your bike has a headlight, correct ? Can you take photo of the headlight side of the in the headlight wire and post here ?
4. How do you turn on your headlight - is the a seaprate handlebar swtich or do your turn it on from the LCD display switches ?
With that info - I will do my best to make a recommendation