Polarity changer    
The changer makes it possible for modern car radios and cd-components to be installed in cars with battery plus on chassis ground. The galvanic separation from input to output of the changer makes it possible to fit the radio without insulation!

More info from our infoline.

Converter from 6 to 12 volts
10 amps max, EURO 95.-

Adapter cabel to connect a walk- or discman to the DIN socket of the car radio.
Available in mono and stereo.
A low cost alternativ to a cassette radio!