Bavaria Control Panel F Button

[lawrence_craig]

Hi All,

I have a Bavaria 46 2007 with the 301/302 control panel.

I am looking to wire some stuff to the F buttons (switches) at the bottom of the panel

I can see in the manual where to connect the red +ve wire but cannot work out where to put the -ve black wire. Anyone got any clues? Probably something really simple...

Many thanks

[Cat36Mahalo]

A ground some where that connects to the - side of the battery??