Folks, my issue is no spark, 75 302 breakerless ignition. I have 12v at the coil. I have replaced the coil and computer (pulled from my working 79). The dist is turning. I pulled the dist and put in one from a working junker from two years ago. The engine cranks fine but no spark at the coil. I checked for spark going from coil wire to a ground and with the coil connected using a timing light (no spark, no light) I have replaced the coil wire with one from my working 79. I even went so far as to pull the coil & comp from the 75 and it works in my 79. The only thing I haven't swapped is the dist from my 79 to the 75. Any thoughts would be appreciated.

 

sounds like wiring or dizzy.

test the dizzy at the connector use an ohmmeter and check between the orange and purple wires (which go the the module, the black is a ground). should be around 600-800 ohms. it should also be able to put out more than 1 volt AC at the same wires.