Yes, it is possible. It has to be a latching AV switch. I have installed two successfully myself. They were 12mm and had no illumination to them. When I searched for the illuminated style switches I had the following happen:
1. Bought from Amazon and received momentary switches in a bait and switch scam. Was fully refunded but got two switches I could not use.
2. Latching illuminated switches that were 16mm were too long unless I used a control box. The control box would not work on my Liberator or Monarch.
3. Latching illuminated switches that were the right height for the hilt were 19mm in size and I didn't feel comfortable drilling that big of a hole in my hilts.
You can go to my Bluetube channel at:
www.youtube.com/bluespike1974You'll see the switches that I installed on the King and Prophet.