Hey guys. I've got a 83 Blazer that I converted to 7747 TBI about 20 years ago. A place called CustomEFIs helped me out and provided the distributor shown below. It appears to be a non CC distributor adapted to CC somehow. You can't tell here, but it's also coil-in-cap, where a standard 1990 truck TBI was external coil. I'm starting to have some issues and would like to convert to a standard/"normal" TBI distributor with external coil. These distributors have two exposed connectors from the module at the base with 2-pins and 4-pins.

Looking at what I have here, there are 4 wires going in on the left, which go straight to the module. On the right side there are 3 wires going into the distributor, 2 of them go to the module and another going to ground (I think). Does anyone understand this setup and how the connections should map to a "real" TBI distributor? I'd really prefer not to have to trace every wire back to pins on the ECM if I can avoid it. Thanks.

guts.jpg