Schwinn Cruiser Deluxe 7

A friend bought one of these and there is a light and a horn (button on the
side of the tank).

My question is...are there 2 separate batteries for the horn and light? The
manual is generic
and not for the features of this bike.

My guess is that you have to remove the screws around the light and/or tank,
but prefer not to mess with it
until I know for sure. The LBS didn't know as it's not a common model there.

Anybody have one of these?

Thanks!

Carl