So i ran the test today. And after turning the distributor by hand the led would blink on and off and when i stopped the led stayed off. I even ran a datalog as i did this just in case you needed it. so what next?Looks like it's got a problem getting the signal from the distributor Hall effect sensor. Try (temporarily) setting LED 15 from Output 4 to IRQ trigger. Then take the distriubutor out of the engine but leave it plugged in to the harness. Turn the key on and turn the distributor by hand. The middle LED should blink on and off as the vanes in the distributor pass through the sensor. It should either stay on solid or stay off when you stop turning the distributor. Let me know what you find.