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how do I hook up the LT1 data link connector???


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I'm working on the wiring of my LT1 and was hoping someone would tell me if I need to hook up wires 540 ORN and 650 BKL or 451 BLk/WHT?

 

I have hooked up PCM D20 and D30.. Are these the only 2???

Thanks!

 

To help others in the future, I have figured out the correct wiring...

you need to ground pins 4 and 5 and supply power to pin 16..

Plus of course hook up pcm 6 and 9 as shown... :lol:

 

 

 

normal_Image-02.JPG

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You need three wires to the DLC:

1: D30 (serial data) goes to "M" on the DLC

2: D20 goes to "B" on the DLC

3: "A" on the DLC goes to chassis ground

 

That's it....

 

This is assuming that you are using an OBDI DLC. I got my DLC from a Cavalier as the harness did not have one.....

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Any OBD1 car will do. The connector is part of OBD1 standards. The connector has to be the same on all OBD1 cars. I cant remember what year they started OBD1 though. And also part of the OBD1 standards is that it must be under the dash. So finding one shouldnt be a problem.

 

 

Guy

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