I hooked mine up the exact way you see it and it never had a issue. But i do not run a computer. That is the only difference i see, other then you added a resistor.Hey Msmoke, I originally used your instruction to put my ignition together. I just can't understand why this thing quits dying on me.
So it would make sense to me you have another problem, or since you only have half the computer hooked up, it is effecting the way the engine runs. Check to see what the emissions computer does/controls, and if it is causing the problem.
Oh and my old tach had 1 wire that went to the negative side of the coil, and worked fine before it broke, i just never replaced it.