Thanks for the responses. Let me tell what led to my "shotgun approach" - I took the car to 2 dealers in my area (HBL, Inc and Euro Motorcars) - they've told me to replace the harness. After I did that I went back to them - the list of "needed replacement parts" grew. Good thing I was ordering and replacing myself - otherwise I would be looking at $5k+ bill by now. And couldn't find any competent independents in the area as well. So - wanna do something right, do it yourself. As for the chain and timing, I doubt its thats - about a year and a half ago I had the chain and guides replaced by a mechanic, the car was fine for about a year after that...