Those are some awfully big turn signals!
Unless they plug into a wall socket ,you may be in trouble. The bike produces about 10 amps of power ,uses about 7 when running and the remaining 3 to recharge the battery. If those extra lights draw even 18 watts each ,you'll have no power left to recharge the battery,unless you change most of you stock bulbs(or at least your headlight) to LED's.