Sirius Blown Radio Fuse

I just recently had help from my brother-in-law to install my satillite radio from Sirius into my '96 Volks. Golf. It worked well on a couple long trips and then one day I went out to my car and the radio fuse was blown.

It's since been replaced, but I'm concerned that this will be a reoccuring problem. I'm not very car savvy and wanted to see if there would be some kind of preventitive step I could take so I'm not worrying about constantly blowing my radio fuse.

Was anything placed into the cig lighter, it's on the same circuit.

Yes, the Sirius radio plugged into the cig. lighter.

There should be a sticker on the unit specifying how many Amps it draws, what size fuse did it blow?