In the December issue of “M-K” for 1990 were published material about the switch-gubbare. There is proposed a technical solution I liked, but… think about it, has developed its own version. In order to turn on the light of the two points, sometimes enough to modify the normal switch. It is necessary to disassemble and install a third contact plate. This is done quite simply.
After the removal of the switch housing is turned the screw holding key and a contact plate. Now the base remains only the second contact plate, copper screw fixed symmetrically to the switch there is a ledge. On this ledge you need to drill a hole with a diameter of 3.2 mm for screw mounting of the additional contact.