well this is for the people thats on a budget..and like to DIY stuff. this is a wiring diagram from my friends conversion harness running p28 uberdata.
oBd2a to obd1 conversion harness

obd1 plugs | obd2 plugs. So Obd1 pinout are on the left, and obd2 is on the right.
----------------------------
A1 to A4
A2 to A1
A3 to A3
A4 to A8
A5 to A2
A6 to A6
A7 to A16
A8 no use
A9 to A12
A10 no use
A11 no use
A12 to A27
A13 to A18
A14 no use
A15 to A17
A16 to A19
A17 to A26
A18 no use
A19 no use
A20 to A15
A21 to A20
A22 no use
A23 to A10
A24 to A23
A25 to A11
A26 to A9
-------------
B1 to A24
B2 to A22
B3 no use
B4 blank
B5 to C5
B6 blank
B7 to C29
B8 to C16
B9 to C6
B10 to C18
B11 to C4
B12 to C14
B13 to C3
B14 to C13
B15 to C2
B16 to C12
-----------------
D1 to C10
D2 to D5
D3 to D6
D4 to C7
D5 no use
D6 to C15
D7 to C8
D8 no use
D9 to C17
D10 to D16
D11 to D1
D12 no use
D13 to D2
D14 to D7
D15 to D8
D16 no use
D17 to D3
D18 no use
D19 to D4
D20 to D10
D21 to D12
D22 to D11
----------------
it'll work for p30 and p72 also and other obd1 ecu

rip out the obd2 plugs from Automatic since they have extra pins to replace those short pins.

 

has this every actually been used?

 

Does this work for automatic ecu in an Accord?

 

Bump nice write up

 

juuuust what i was looking for!!! yess

 

Nope. But this one does.

http://www.rywire.com/catalog/automa...-obd1-p-7.html