I’d like to swap out my wife’s stock saddle & post on her Vado SL. I have a new Specialized mirror that I bought on sale & carbon post but would like to be able to use the stock red rear light. I’m wondering if anyone has managed to reuse the wiring & light. The Specialized saddles have a place to attach the light but I’m not sure how to attach the wiring with a different seatpost. Possibly drilling a small hole? Thanks for any ideas.