Leaderboard

As you can see in your photo, the wire numbers are stamped next to where the plug wire connects. It appears your coil pack has been installed on the ICM 180 degrees from what it should be making number 6-3 nearest to the harness connector. I didn't know that was possible but apparently it is. If you reverse the coil pack numbers 6-3 will be on the opposite end from the harness connector as they should be. Below is a photo of my old Magnavox ignition with the coil pack installed properly. Numbers 6-3 should be on the opposite end from the from the harness connector on the Delco coils also.

The website works well for me on my laptop and iPhone. I suspect the "12" for all is well comes from the instructions for the 1991, the Bosch system. It is listed under the 1991 ABS instructions on this website as the last number in the string and there are no more codes. I didn't see any "all clear" type of flashing on the 88-90 instructions so I looked in my FSM and it states: if the light comes on for four seconds and then stays off, there are no codes stored.

So far so good, will do.