Having successfully decoded the PGM-FI Main Relay's DNA, I'm now on the warpath for the Igniter, in preparation for another update to the FAQ. Some basics: 1) The igniter simply replaces the old make/break points in a Kettering system. 2) The role of the vacuum/centrifugal advance, and the distributor cam is now performed by the ECU. The ECU performs this function by adding or cutting ground as necessary, just like it does with the Main Relay. 3) The igniter has an activation power feed from the ignition switch. The coil's power goes through the igniter as well, but can't go anywhere until the igniter is powered by the ignition switch and grounded by the ECU. 4) When the ECU grounds the white wire, the flip-flop in the igniter closes, allowing the coil's current to travel through the same white wire to ground in the ECU, thus charging the coil. Now: When the igniter gets broken, what exactly goes wrong with it? Does the transistor fuse in the open position? Does some other component go bad and prevent current from flowing? Is it cracked solder again? Anybody know?