So I was cruising today not beating on my car at all and I noticed my battery/volt gauge surging from middle to high and it kept doing this over and over again then all of the sudden my radio and all lights exterior and dash shut off, now mind u I thought I lost all power but the motor kept running and I had power steering control still also .... Just seemed like the accessories/dash and headlights/foglights got killed then a few seconds later everything came back on ..... It happened twice during one cruise so..... Wondering if this is an alternator going out or what? I have had alternators go out on other vehicles but they seem to just quit and I lost all power to everything...... Am I right thinking this is an alternator problem?