MP Phase III Ignition

[juliosz]

Originally Posted by caflorin

My 68 BM SS427 Phase III Corvette still has the Phase Ignition Box mounted, but is no longer being used. I suspect something went wrong with it and a previous owner decided to go back to points. I would like to get this car returned to the Phase III ignition, but I can't find a lot of info on it. From what I have found, the stock distributor was used and the coil many have been changed to work with the system. Im sure there was something that fits in where the points are mounted. Does anyone have any information about the full package MP used back in 68/69? (Distributor, pulse sensor, how to attach the wiring harness, etc). The components in box look goods, but there is an electronic smell. Pretty sure I have the skills to reproduce a circuit diagram and check out the components in the box, but would appreciate any help for anything else I might need.

You could replace whatever failed but you'd likely have something else fail shortly after. The electrolytics (capacitors) and old transistors would be the likely fail points. Assuming this system works like factory TI, you might want to consider replacing your old electronics and adapt one of the TI replacement boards you can buy from any good Corvette parts supplier.