Me too. I use a Knog PWR tail 1000 lumen rechargeable with multiple programable light modes both brightness and flashing. It has a 5,000 mAh battery pack and has a usb outlet to a recharge phone. In the back I use a Cliq rechargeable tail light with multiple programable light mode, an accelerometer that activate a brighter mode when braking and automatic pause when motion stops, and a security alarm that gives you near instant notification on the app when your bike is parked and someone jiggles it. The combined cost of both lights is around $150 usd plus shipping and installation cost is $0. I did have a Light and Motion Vis E 800 on hand and installed it on the handlebars but did not bother with the integrated tail light (it gets very little use)Are you looking at a light(s) to make you more visible to others on the road (i.e. strobe) or to better see in the dark or both? I have the Synapse Neo 2020 and use USB rechargeable lights (good for 17 hrs runtime on strobe - SeeSense Icons both front and rear) and also a 750 lumen light (headlight beam) for rides where it gets dark and I need to see the road / path in front of me. If you have the handlebar real estate I also recommend the detachable USB lights.
I bought a bosh cable for less than 10 euros and then a cranck puller. I managed to doo the internal routing I used an electric wire that i attached to the bosch cable with some duct tape.I have a 2019 Synapse Neo 1 "pre-wired" for lighting. I cannot see any plugs on the bike or openings into the battery housing to run wires. I contacted Cannondale and they said take it to a bike shop..... Has anyone added a tail and head light to their unit? Thanks!