Jeff I put a MSD shift light in the car. The problem is I have a vertex mag in the car. I had to buy a converter to use with the mag. It doesn't work correct. Some times the light will flash at 5,000 then 6,000 some times at 4,500. I have 6,000 chip in it. I called MSD and was told nothing they could do about it. I told the guy ther SO I SPENT 245.00 FOR SHIFT LIGHT THAT DON'T WORK. Thanks MSD
