Hei conversion Intermittent start?
Yup. need to have both sides of the original ballast wiring connected in order to have the bypass circuit active.
Must have the module grounded through the mounting screws,
Must have the distributor connector connected as shown, IE the exposed pin on the module connector hooked to the pin as shown.
. I was fairly sure that i correctly bypassed the ballast resister. Bypassing the ballast resister leaves 1 12v switched wire right? The other wires go between the two sides of the balast resister or to the ecu if i remember right.?
Sounds to me like you do not have the bypass wire (traditionally brown) hooked up. Here's the deal. The switched 12V or "ignition run" or IGN1 is ONLY HOT in "run" NOT in "start." So to get ignition voltage in "start," you must also have the traditionally brown, bypass, or "IGN2" hooked up. This used to go to the same side of the ballast as the coil+ is hooked to.
There are only two wires that end up back at the bulkhead connector --- IGN1 and IGN2 in that harness.
It's probably starting some of the time because during start, with no ignition, it won't fire. You are probably "sometimes" releasing the key back to run with the engine still moving some from the starter, and it fires.
Try turning the key to "run," go out under the hood, and see if it fires by jumpering the start relay. I bet it fires right up
