Need Help with 69 Wiring harness identification.
Thread Starter
Race Director
Joined: May 2006
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From: Dayton, Ohio
Need Help with 69 Wiring harness identification.
This number doesnt show up in my GM parts book unless I'm looking in the wrong place.Any help would be appreciated.Also look at the fusible link down towards the starter....I have replaced many but they were right at the starter not 12" away.Does that look odd?Thought maybe it might be a TI but dont think so,beginning to think its not even for a vette.
Last edited by ...Roger...; Sep 12, 2008 at 01:19 PM.
Drifting
Joined: Mar 2008
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From: Nixa Missouri
I may not be of any help here but can say that my fusealbe link on my early 70 coupe is plus or minus 12 inches away from the starter. I'll look for some pictures but I'm not home right now. I'll see what I can come up with to help.
Racer
Joined: Aug 2003
Posts: 259
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From: Sacramento CA
That looks close to correct to me but a few differences. The grounds sure make it look like a Corvette. Maybe a 68, not a 69.
The purple is the starter solenoid and that wire bundle runs back to the firewall. There is a clip there on the firewall and that is where the fusible link is, no doubt about that. The big orange round connector is the blower. The two reds are the wiper door limit switch (Corvette only). Green, yellow & Lt blue are the wiper motor. The red looks like an ignition lead but that should be a cloth covered resistor wire. TI has an additional harness to the module and another lead from the ignition switch to the TI harness. the long two wire lead is the backup switch on the trans. It should be pink and green. The single black leads are grounds.
Other leads that may be on this harness are horn relay/key buzzer, temp switch, brake warning. Here's a couple of images, maybe the'll help. Good Luck
The purple is the starter solenoid and that wire bundle runs back to the firewall. There is a clip there on the firewall and that is where the fusible link is, no doubt about that. The big orange round connector is the blower. The two reds are the wiper door limit switch (Corvette only). Green, yellow & Lt blue are the wiper motor. The red looks like an ignition lead but that should be a cloth covered resistor wire. TI has an additional harness to the module and another lead from the ignition switch to the TI harness. the long two wire lead is the backup switch on the trans. It should be pink and green. The single black leads are grounds.
Other leads that may be on this harness are horn relay/key buzzer, temp switch, brake warning. Here's a couple of images, maybe the'll help. Good Luck
Team Owner
Joined: Sep 2006
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From: Westminster Maryland
I don't see the bright yellow insulated wire that runs from the R post of the starter to the neg. post of the coil. I don't know what that means, but I did notice it?
My parts book says Group 2.525 Ignition Harness 8901875 70 Corvette except A/T.
Regards, Alan
My parts book says Group 2.525 Ignition Harness 8901875 70 Corvette except A/T.
Regards, Alan
Thread Starter
Race Director
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From: Dayton, Ohio
RPOL68 thanks for the pics.If you follow the harness starting at the bulkhead connector you come to 3 wires..2 of the wires are in a double connector and the wires are green and blue they also have a single black ground lead...what do you think that 3 wire setup connects to?
Last edited by ...Roger...; Sep 12, 2008 at 06:36 PM. Reason: spelling
Thread Starter
Race Director
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From: Dayton, Ohio
The yellow is brown on this harness.The purple that goes to the S term. is sorta purple gray.I'm wondering if GM had several suppliers of harnesses and this one is slightly off.
Thread Starter
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I think this harness has TCS wiring in it also.
Team Owner
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From: Westminster Maryland
Hi DW,
My book is the Motorbook's version, 1953-1972. It is a 1989 published date.
Is the 2 wire coil with the tape wrap on it in the center of the picture the TCS lead? That's what the CEC lead on my 71 looks like.
Regards,
Alan
My book is the Motorbook's version, 1953-1972. It is a 1989 published date.
Is the 2 wire coil with the tape wrap on it in the center of the picture the TCS lead? That's what the CEC lead on my 71 looks like.
Regards,
Alan
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From: Shamong, NJ
Alan's right, I have a GM May 80 parts book with the same info, 8901875 = 70 w/Manual Trans. The 69 ignition harness was 6297582 for all transmissions. A quick look at my Dec. 83 parts book revealed no listing for 68, 69, 70 or 71 ignition harnesses. Those must have been discountinued between 80 and 83. Both my books are original GM books.
I don't recall the 70 manual trans. cars using the TCS, which would explain the different part numbers for A/T and M/T ignition harnesses. The TCS solinoid had a jumper harness that connected the TCS to the ign. harness, requiring an additional terminal for the TCS harness to plug into.
Thread Starter
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From: Dayton, Ohio
I'm going to have to look into some newer books. Thanks Allen
Thread Starter
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Alan's right, I have a GM May 80 parts book with the same info, 8901875 = 70 w/Manual Trans. The 69 ignition harness was 6297582 for all transmissions. A quick look at my Dec. 83 parts book revealed no listing for 68, 69, 70 or 71 ignition harnesses. Those must have been discountinued between 80 and 83. Both my books are original GM books.
I don't recall the 70 manual trans. cars using the TCS, which would explain the different part numbers for A/T and M/T ignition harnesses. The TCS solinoid had a jumper harness that connected the TCS to the ign. harness, requiring an additional terminal for the TCS harness to plug into.
On the TCS wasnt that just for manual cars?Like I said before so many of these cars have these items removed and the harnesses cut.It seems lately so many of my customers are going the NCRS route and now wanting these things put back on and made to operate.
Thanks for the info guys.
Race Director
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From: Shamong, NJ
You probably need some older books. To the best of my knowledge, the last updated books that Chevrolet printed, are the Dec. 83, 53 to 82 books. I have the 53-82 book on microfich and it's dated 12-83.
Prior to 68, the corvette was included in the full line Chevrolet parts book, in 68 GM split the Corvette out into it's book. These books were updated each new model year (and sometimes mid year) through 1983. When the C4 came out, a new book was created covering 84 and up. About 1990, Chevrolet stopped printing paper books. Chevrolet put the catalog on computor, but continued to offer it on microfich for smaller, non computer equiped customers. I think they dropped the microfich around 02 or 03.
I have 13 or 14 different parts books in my store, the earliest is dated 1962 and going up through Dec.83. I also have an 84-87 book and the 53-82, 84-96 & 97-02 on microfich. Not a day goes by that I don't have to go to one of those books in the store.
I don't remember on the TCS, one of those things I'd need to go back to an old parts book to look into!
Prior to 68, the corvette was included in the full line Chevrolet parts book, in 68 GM split the Corvette out into it's book. These books were updated each new model year (and sometimes mid year) through 1983. When the C4 came out, a new book was created covering 84 and up. About 1990, Chevrolet stopped printing paper books. Chevrolet put the catalog on computor, but continued to offer it on microfich for smaller, non computer equiped customers. I think they dropped the microfich around 02 or 03.
I have 13 or 14 different parts books in my store, the earliest is dated 1962 and going up through Dec.83. I also have an 84-87 book and the 53-82, 84-96 & 97-02 on microfich. Not a day goes by that I don't have to go to one of those books in the store.
I don't remember on the TCS, one of those things I'd need to go back to an old parts book to look into!
Team Owner
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From: Westminster Maryland
Hi DW,
I believe in 70 it was TCS (transmission controlled spark), in 71 it was CEC (combined emissions control) and the throttle position sensor had the TCS built in to it, in 72 it was back to the TCS.
Getting the right solenoids, wires, hoses, brackets and labels on the right engine in the right place can be a real nightmare. Getting them to work properly is more than a nightmare!!!
Regards,
Alan
I believe in 70 it was TCS (transmission controlled spark), in 71 it was CEC (combined emissions control) and the throttle position sensor had the TCS built in to it, in 72 it was back to the TCS.
Getting the right solenoids, wires, hoses, brackets and labels on the right engine in the right place can be a real nightmare. Getting them to work properly is more than a nightmare!!!
Regards,
Alan
Thread Starter
Race Director
Joined: May 2006
Posts: 16,528
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From: Dayton, Ohio
You probably need some older books. To the best of my knowledge, the last updated books that Chevrolet printed, are the Dec. 83, 53 to 82 books. I have the 53-82 book on microfich and it's dated 12-83.
Prior to 68, the corvette was included in the full line Chevrolet parts book, in 68 GM split the Corvette out into it's book. These books were updated each new model year (and sometimes mid year) through 1983. When the C4 came out, a new book was created covering 84 and up. About 1990, Chevrolet stopped printing paper books. Chevrolet put the catalog on computor, but continued to offer it on microfich for smaller, non computer equiped customers. I think they dropped the microfich around 02 or 03.
I have 13 or 14 different parts books in my store, the earliest is dated 1962 and going up through Dec.83. I also have an 84-87 book and the 53-82, 84-96 & 97-02 on microfich. Not a day goes by that I don't have to go to one of those books in the store.
I don't remember on the TCS, one of those things I'd need to go back to an old parts book to look into!
Prior to 68, the corvette was included in the full line Chevrolet parts book, in 68 GM split the Corvette out into it's book. These books were updated each new model year (and sometimes mid year) through 1983. When the C4 came out, a new book was created covering 84 and up. About 1990, Chevrolet stopped printing paper books. Chevrolet put the catalog on computor, but continued to offer it on microfich for smaller, non computer equiped customers. I think they dropped the microfich around 02 or 03.
I have 13 or 14 different parts books in my store, the earliest is dated 1962 and going up through Dec.83. I also have an 84-87 book and the 53-82, 84-96 & 97-02 on microfich. Not a day goes by that I don't have to go to one of those books in the store.
I don't remember on the TCS, one of those things I'd need to go back to an old parts book to look into!
Thread Starter
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Hi DW,
I believe in 70 it was TCS (transmission controlled spark), in 71 it was CEC (combined emissions control) and the throttle position sensor had the TCS built in to it, in 72 it was back to the TCS.
Getting the right solenoids, wires, hoses, brackets and labels on the right engine in the right place can be a real nightmare. Getting them to work properly is more than a nightmare!!!
Regards,
Alan
I believe in 70 it was TCS (transmission controlled spark), in 71 it was CEC (combined emissions control) and the throttle position sensor had the TCS built in to it, in 72 it was back to the TCS.
Getting the right solenoids, wires, hoses, brackets and labels on the right engine in the right place can be a real nightmare. Getting them to work properly is more than a nightmare!!!
Regards,
Alan
Racer
Joined: Aug 2003
Posts: 259
Likes: 2
From: Sacramento CA
Wiring diagrams
Dr. Rebuild has some great wiring diagrams available. You might check out this site and see if you can identify it from the web pictures.
http://docrebuild.com/oosoez.html
http://docrebuild.com/oosoez.html