You shouldn't have a problem with voltage draw. There's a lot of different styles and types on the market. Decide where you may want to mount them, that may effect your choice. On my XC, I added a license plate frame with a LED tail light & flashing brake light. Also the Hyper lights(LED) that come in 2 different sizes and can give you tail & added flashing brake light. Good luck in your search. Thousands of choices out there.
2015 XCT Two Tone White/Gray
Ultimate Seat & Backrest
Custom Dynamics Non-Sequential License Plate Frame
Kuryakyn #4178 Windshield Bag
Victory Bag Guards
Custom Dynamic Cool Magic Bullet LED Running Lights
Traded for a 2015 Cross Country Tour on 8-31-15
Previous bike was a 2010 Victory Cross Country-Midnight Cherry, had 54,xxx+ trouble free miles. Just needed a change & got a great deal.