If you can not find the fuse the number one answer is getting a in line fuse. It is a fuse holder where you can get any size fuse in it, amperage wise.
They are sold almost everywhere.
If your lucky you can go to big auto parts stores to have an open Chilton's Manual for your vehicle. That way you can find exactly where the manufacturer radio fuse is. They have pictures. And have saved me hundreds of repair headaches making repair jobs so much easier!
