Does anyone have a wire color diagram of an unmolested ECM harness for an 87 GT or point me to the proper thread where it exists?

Bought an abandoned project where the previous owner attempted the camaro ECM upgrade but sold the ECM before i could get to it.

Managed to get my hands on a 1227170 ECM but i am experiencing starting problems and would really like to verify everything is back where it should be before i look elsewhere for problems.

Thanks in advance,

Walter

This is from the '86 FSM but the wire colors are the same:

There's 2 pages to cover all the connections. The pics here are kinda small though.
https://www.fiero.nl/forum/A...110502-2-104937.html

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Calgary time/temp

3.4L Supercharged 87 GT Click me
Super Duty 4 Indy #163 Click me

Thanks for the help.

Will try to verify everything later today and will post results.

Walter

Ok im puzzled...
Have only one Tan/Blk wire available but the diagrams have it referenced for both D5 and A7.
Figure A2 pin D5 shows it for the EST Bypass on the distributor.
Figure A3 pin A7 shows it for the Shiftlight.

Any ideas??

[This message has been edited by walterbkeen (edited 09-06-2014).]

Look at C203 pin A. If there is no wire there, and assuming you have a MT, then there is no wire for the shift light on your harness. They stopped using the shift light but I can't say which year.

It is a manual.

Moved the Tan/Blk pin to D5 and attempted starting... Still no spark.
However, I now feel confident enough that the ECM Wiring is no longer the issue.
Already have a new Coil to ICM cable and a new Control Module Connector on order since they were brittle and suspect anyways.

Unfortunately, i have to go away for a week on a business trip today and will have to continue when i return.
Thanks for your help and will update when i get back.

[This message has been edited by walterbkeen (edited 09-06-2014).]

Returned from my trip and continued troubleshooting to discover a bad ignition control module. Likely failed due to the questionable wiring.

Also managed to speak with the previous cars owner who highly suggested that I order the reflashed Camaro ecm but couldn't recall from whom he ordered it from.

Anyone know if they are still being sold?

http://reddevilriver.com

Yeah if you want a 1227730

[This message has been edited by phonedawgz (edited 09-23-2014).]