Clarion
Get the serial # off the radio and contact your local dealer.
try 6082
The Philco radio model R91 is a commemorative edition radio produced in the 1980s. Parts may no longer be available.
its a 4 digit code to enable radio operation,best bet is to pull radio out and get serial number from sticker on top of radio and call Volvo dealer with radio model # sc-815 or sc-816 and serial number and they can run thru computer and get your code
Clarion
Get the serial # off the radio and contact your local dealer.
should be on the top of the radio when you take it out
what aplicatiom for this radio(car model?)
its on the rear of the unit but normally clarion or kenwood
9288
you will have to pull your radio out of the dash to be able to look at the model number and/or serial number of your radio. Call a local Pontiac dealer and they can give you a code to enter when you turn your radio on after changing your battery.
M 477086
9288
try 6082
5722
9611 regards Eddie