Same problem with cateye strada wireless and NiteRider Classic. Computer does not work when light is in any blink mode or any low watt setting. Mileage reading using 12w does not match mileage reading using 20w. Neither matched daytime (no light on bicycle) mileage. Day to day readings varied by 0.25 miles for a 15 mile route.

I have a cateye strada wired on my new bicycle. The mileage matches to within 0.01 miles for the same 15 mile route.