alternator on 2001 Oldsmobile Aurora

My 2001 Aurora has 120,000 and I'm on my second alternator, in addition to that my volts jump or I should say drop and then jump back to normal the little diodes on the steering wheel have all burned out as so did one of the dioeds on the heated seat switch. I also go through at least two headlights and running light bulbs a year. I'm careful not to touch them I think its all related. The first alternator was a GM and this time I'm going with what I've been told is a better grade after market. Is there something elses I should be doing or replacing?

Asked by for the 2001 Oldsmobile Aurora
1 answer
Napa has new alternators about $234 plus shipping or at their local store