Well, I hope I found the problem. Sorry if the pic is large, but I wanted to the contact points. Notice the deep gouges on both sets of contacts. I've always had a slight issue with my PS parking light. Sometimes it would work and then other times I had to tab the light for it to come on. Usually the light would come one after I was on the road for about 15 mins. I think the first time my fuse blew the light had just come on. I believe this also happened the with the second fuse. The picture shows 2 different brand bulbs with 2 diff wattages. The one on the left is the recommended 21/5w. The one on the right is a 27/8w. That is the one that was always slow to come on. So I pulled the bulbs straightened out the contacts inside the socket and installed 2 proper bulbs. I slapped in a new fuse and went for a drive duplicating the previous incident. The other fuses blew within 5 minutes, but after a 30 min drive with my stereo on........no blown fuse. I'll update in a fews days to determine if this was a real fix.