Name Ext. inf. A* Use of Part number A
loudspeaker
aerial amplifier
switch-over box for aerial
amplifier (diversity)
for models with fitted radio,
mobile phone and preparation
for telephone

amplifiers
for vehicles with radio

see illustration:
* In the column 'A' indicates the number that is used in the selected vehicle.
To find out where to buy the item or equivalent, click on the part number.