I'm trying to correlate what I see on my truck with this picture:



I have a coil in cap setup from a 1983 GM HEI setup converted to TBI. The distributor itself is TBI, but the cap is original. I see 4 wires at the base of the distributor on the passenger side which look to be the ABCD set of 4. But I also see three wires coming out the front of the distributor which I'm not sure about. Probably the pickup, but why 3? And then tons of wires going up to the cap, presumably to the coil. I can post some pics in the next message so this doesn't get rejected.