Wow, so, you just bought this battery, hooked it up (hacked it up) and the lite was gone and **** worked? Awesome. If that is the case, you might have just saved me a big ass hassle. if you want, you can PM the the pic, I won't share, I promise! Thanks so much.
Honestly, I think most of the potential new owner population wouldn't want this hooked up, but it's the light that bothers people. New windshield and a nice detail and she is ready to go.
Hilariously, I am in some weird zone where (presumably) my battery is weak enough that the start/stop is disabled but strong enough that I don't have the ECO light turning on. I should probably pull out a multimeter and check the voltages on both.