Interesting. You wouldn't happen to know which 2 grounds it was that was the cause of the trouble would you? I know I've gotten the major connections clean, but I've probably missed something somewhere. -Robert vin 6585 "X" --- In dmcnews@xxxx, "Hank Eskin" <heskin@xxxx> wrote: > I had this exact same problem in Memphis (although it was more erratic). > DMC Joe found and fixed two bad grounds, causing a ground fault. He said > the tach is one of the first/best warning signs of a grounding problem. > Besides fixing the tach problem, my car now runs better than it ever had. > There is more power available for all the accessories, and the voltmeter > doesn't go nearly as low as it did in an "all-on" state. And now my horn > and turn signals work at night when I have the A/C on. > > -Hank Eskin #1619