Looking for some electrical connector guidance
Thread Starter
Le Mans Master
Joined: May 2006
Posts: 7,876
Likes: 254
From: Hillsboro OR
Looking for some electrical connector guidance
I have a 2003 Coupe A4. I have decided to convert it to a M12. I have the complete set of the Helms 2003 service manuals. I can read schematics. I have read a few build threads on the Corvette Forum (and Digital Corvettes) that the trans harnesses are interchangeable form 2001 - 2004. Is that correct?
I purchased a "2002 Z06 manual transmission" harness from EBay. For reference: One end of the harness connects under the battery tray (4-connectors).
Connector C142 (Trans to Engine harness) matches my service manual pinout with the exception of; Pin E Vehicle Speed Sensor is pluggged and not connected.
I would assume it should be connected.
Other differences I found were C140, 146, and 148 are all 12 pin connectors on the purchased harness but, they are 14 pin, 10 pin, and 10 pin respectively in the service manual.
I haven't started my trans swap yet. So I don't know if the harness I bought is correct, or if the service manual is.
Finally, my questions are: (sorry for the short novel).
Are these harness interchangeable within the years 2001 - 2004?
Can someone with a 2002 Service Manual please check the connectors/pinout to check how many pins connectors C140, C146, and C148? (Volume 3/3 - Body and Accessories: Wiring Systems).
I would appreciate any advice you have. Thank you.
I purchased a "2002 Z06 manual transmission" harness from EBay. For reference: One end of the harness connects under the battery tray (4-connectors).
Connector C142 (Trans to Engine harness) matches my service manual pinout with the exception of; Pin E Vehicle Speed Sensor is pluggged and not connected.
I would assume it should be connected.Other differences I found were C140, 146, and 148 are all 12 pin connectors on the purchased harness but, they are 14 pin, 10 pin, and 10 pin respectively in the service manual.
I haven't started my trans swap yet. So I don't know if the harness I bought is correct, or if the service manual is.
Finally, my questions are: (sorry for the short novel).
Are these harness interchangeable within the years 2001 - 2004?
Can someone with a 2002 Service Manual please check the connectors/pinout to check how many pins connectors C140, C146, and C148? (Volume 3/3 - Body and Accessories: Wiring Systems).
I would appreciate any advice you have. Thank you.
Thread Starter
Le Mans Master
Joined: May 2006
Posts: 7,876
Likes: 254
From: Hillsboro OR
Patches,
Thank you very much for your help! It seems at least the connectors in the two different year Service Manuals match. It seems I may have received a mis-marked harness. I'll try to return the "presumed 2002" harness.
I just purchased another harness 2003 manual trans harness w/ F55 from Ebay. This one matches my year and MSR feature. I hope the new one corollates with the pinouts better.
Thanks again.
I seem to recall you did a trans swap? Did it go smooth?
Thank you very much for your help! It seems at least the connectors in the two different year Service Manuals match. It seems I may have received a mis-marked harness. I'll try to return the "presumed 2002" harness.
I just purchased another harness 2003 manual trans harness w/ F55 from Ebay. This one matches my year and MSR feature. I hope the new one corollates with the pinouts better.
Thanks again.
I seem to recall you did a trans swap? Did it go smooth?
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Glad it helped. I did have a buddy do the A4-->M12 swap several years ago. He was one of the first to try it so there was practically no info available about how to go about it. It took him a while to figure out the parts and reprogramming necessary to pull it off.
I did a 2.73-->3.42 diff swap with a high-stall converter along with a headers and a couple of other accessories a few years ago on our '02 A4 coupe and posted the project here. Went great.
Best of luck on your swap.
I did a 2.73-->3.42 diff swap with a high-stall converter along with a headers and a couple of other accessories a few years ago on our '02 A4 coupe and posted the project here. Went great.
Best of luck on your swap.
