2D Pro-Jection O2 sensor

[Fitzgearld, Fredric]

All,

I got my 2D Por-jection (502-20) system late last week.  Inside I found 
a bunch of resistors, a PROM, something that that might be a processor 
(a small square chip), and what might be a driver chip.  Holley painted 
over the tops of the 2 chips that were not the PROM.  I'll look into 
getting the numbers, later.

Now, for the question of the day:

Do any of you have a wiring diagram for what plugs into the 6 pin plug?  
I have the heated sensor from the analog system.  What goes between the 
sensor and the ECU?  If the sensor goes directly into the ECU, what pins 
do they go to?

Anyone have the information for the 4D closed loop system?

Thanks, 

FEF