I made this little diagram, so hopefully someone can make sense of it and fill in the blanks. That way I can get this dizzy wired up and future swappers can learn from it also.

OK, so I am putting an OBD1, TD-41 distributor on my A6. I took the male side of a dizzy plug from the junkyard and left the wires on it so that I can wire my harness to them and pretend that it never had a DPFI, OBD0 plug on it.

My engine harness is DPFI, so I added the two wires into the harness already when I swapped the A6 in. (C21 and C29) Basically, I just need to know which wire to solder to which so that instead of having an OBD0 male plug on it, I will have an OBD1 male plug on it.

The top plug is already done, that's only a 2-wire.



If someone can button it up like this:

8->6
9->1
12->3, etc.

That would be SO appreciated. I just couldn't find a diagram pertaining to my situation.

 

BUMP

 

Just grab a voltmeter and trace the wires from the ECU.
The I made the obd1 diagram below a while ago, and its 100% accurate.
The obd0 diagram should be accurate also, but i just made it.
Using the below info and voltmeter, it should be very easy to get your wiring sorted out.
Let me know if you have any other questions.


OBD0......OBD1
------------------
[b10].......[b11] --> cyp P aka cylinder position
[b12].......[b12] --> cyp M aka cylinder position
[c3].........[b13] --> tdc P aka top dead center
[c4].........[b14] --> tdc M aka top dead center
[c1].........[b15] --> ckp P aka crank position
[c2].........[b16] --> ckp M aka crank position
[b15].......[a21] --> Ignitor signal

 

I took that out of https://honda-tech.com/zerothread?id=1349052 thread. That's what i used.

 

Hmmm...

Anyone else? I'd like to just match up the wires and solder them together.

 

Anyone done it this way before, and can confirm the wire colors to match up?

 

Thanks to this diagram, I have figured most of it out (I think.)



However, the C1 and C2 (C21, C29) wires are still undecided.

The CKPG goes to blue/yellow,
the CKPP goes to blue/green.

Which wire is the CKPG and which is the CKPP?

 

Ok, I think C1 goes to blue green, cause that is the CKPP.

 

Sooo... via process of elimination, I decided that:

10 ----> 4
11 ----> 6
12 ----> 3
13 ----> 5
(Large) 14 ----> 1
(C1) 8 ----> 2
(C2) 9 ----> 7

Orange - Peach
White/Blue - White/Blue
Orange/Stripe - Peach/Stripe
White - White
Large White - White/Green
CKPG (C2) - Blue/Yellow
CKPP (C1) - Blue/Green

C1 C3 C5
C2 C4 C6, etc.

There. We'll see if it works.

 

Ok so I'm at the same problem I'm using a dpfi engine harness and i already did the mpfi on the inside and then did a jumper harness to obd1 ecu and I also ran a obd1 injector harness straight to my ecu... So know I just need to know has to convert my dpfi harness to my obd1 dizzy I already ran the 2 wires out the fire wall Any help on this

 

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