Alternator Gone?

[john]

I was driving around last night when the dash lights started to look dim. I turned off the power to my gauges and radio and started to make my way home. When I put on my turn signal the turbo timer would cut in and out (loose power). I checked my turbo timer for voltage and it said ~9 volts when it is normally ~13. I assume it is the alternator. Just posting this to confirm it. The wierd thing is that I filled my tank friday night and dash lights started appearing. The next morning I started my car and the battery light and the light (I forgot what it is called) that is orange and looks like a memorial came on until I started moving. The last time that light came on was when I hacked the MAS too much on my stock car. So, I am guessing I also got a bad batch of gas also???