E320 Electrical Problems?

[guyever]

I read somewhere that the E320's have a higher than normal electrical failure problem. Am still considering buying a 98 (71,000 miles) and just today noticed a couple of problems. I turned on the fog lights and the right one didn't light. OK, I figured it's just a blown bulb. This afternoon I turned on the headlights and again got a bulb failure message. This time it was the small light (don't really know what you call them) adjacent to the right large headlight. It came on when I put on the bright lights. Out when I dimmed them. What I am trying to figure out is this evidence of an electrical problem or just coincidence that all this happened in a short period of time.
Really appreciate your help, regards
Guy