1970 Wiring question

[Donald O.]

Which is the correct version; the 1970 AIM version or the Lectreic Limited vewrsion. Both are similar, but there are significant differences.

Don

[Robert C.]

Re: 1970 Wiring question

You had better look again, there's no difference!

[Robert C.]

Re: 1970 Wiring question

You had better look again, there's no difference!

[Donald O.]

Re: 1970 Wiring question

Bob,
Yes there is.
Look closely at the bulkhead connector and then compare the two diagrams.
Don

[Donald O.]

Re: 1970 Wiring question

Bob,
Yes there is.
Look closely at the bulkhead connector and then compare the two diagrams.
Don

[Chuck S.]

Re: 1970 Wiring question

Donald, how does the replacement harness compare with the original harness?...In this case, that is the important criterion, not the AIM.

I doubt that GM's assembly workers ever checked to see if the AIM drawing had the correct wire colors/gauges in the correct bulkhead connector cavities, because it was immaterial to them...that bulkhead connector will only go together one way.

Assembly workers would be primarily using the AIM to verify the wire color/gauge at the end connections. Differences or errors in the AIM bulkhead connector drawing from the actual manufactured harnesses would be immaterial so long as the harnesses are different from the AIM on BOTH sides of the connector. Errors in the AIM drawing at that location might go undetected for years...Maybe you're the first one to see it...Or, you're reading the drawing wrong.

That's why I don't think LL's harness is in error, AIM not withstanding. It wouldn't take very long for them to hear about screwed up bulkhead connectors. Check it against your original harness; it IS possible you have the wrong harness in a bag indentified for your application.

[Chuck S.]

Re: 1970 Wiring question

Donald, how does the replacement harness compare with the original harness?...In this case, that is the important criterion, not the AIM.

I doubt that GM's assembly workers ever checked to see if the AIM drawing had the correct wire colors/gauges in the correct bulkhead connector cavities, because it was immaterial to them...that bulkhead connector will only go together one way.

Assembly workers would be primarily using the AIM to verify the wire color/gauge at the end connections. Differences or errors in the AIM bulkhead connector drawing from the actual manufactured harnesses would be immaterial so long as the harnesses are different from the AIM on BOTH sides of the connector. Errors in the AIM drawing at that location might go undetected for years...Maybe you're the first one to see it...Or, you're reading the drawing wrong.

That's why I don't think LL's harness is in error, AIM not withstanding. It wouldn't take very long for them to hear about screwed up bulkhead connectors. Check it against your original harness; it IS possible you have the wrong harness in a bag indentified for your application.

[Donald O.]

Re: 1970 Wiring question

Chuck,
I am not comparing harneses, I am comparing information. I draw the wiring harnesses in FULL COLOR in AutoCAD and then print them at a size of 22x34". I just like my work to reflect what is correct. I have drawn the 61 through 67 diagrams and I am working on finishing the 68-73 years. I do not sell the diagrams, but they can be had.
Don

[Donald O.]

Re: 1970 Wiring question

Chuck,
I am not comparing harneses, I am comparing information. I draw the wiring harnesses in FULL COLOR in AutoCAD and then print them at a size of 22x34". I just like my work to reflect what is correct. I have drawn the 61 through 67 diagrams and I am working on finishing the 68-73 years. I do not sell the diagrams, but they can be had.
Don

[Richard D.]

Re: 1970 Wiring question

Don:

Would like one when you're done.

You did the AIM's on Access, right?

If you did, it was an awesome piece of work!

Rich

[Richard D.]

Re: 1970 Wiring question

Don:

Would like one when you're done.

You did the AIM's on Access, right?

If you did, it was an awesome piece of work!

Rich

[Chuck S.]

Re: 1970 Wiring question

"I draw the wiring harnesses in FULL COLOR in AutoCAD...I have drawn the 61 through 67 diagrams and I am working on finishing the 68-73 years."

Well...I guess that would eliminate the possibility of you reading the drawing wrong.

I would probably use information from wiring diagrams in the Chassis Service Manuals. Under some circumstances, service technicians could have more than an academic interest in knowing the wiring configuration at the bulkhead connector; GM might have been more careful to get it right (more checks and sign-offs) in that publication because it could have been important.

If LL's wiring diagram didn't agree with the Chassis Service Manual, I would discard the LL diagram for your purposes. One thing to keep in mind is that sometimes wiley characters will deliberately build errors into documents that don't really effect the functionality, but insures that someone doesn't merely copy their documents for profit without building in a fatal flaw.

Your only other alternative is to "as-built" the wiring diagram from an original harness. I know your objective is to avoid examining harnesses, but this wouldn't be the first time engineers have found stuff on drawings that was all wrong or wasn't supposed to be there...underground piping, electrical conduits, sewers, etc. comes to mind...makes project engineering interesting.

[Chuck S.]

Re: 1970 Wiring question

"I draw the wiring harnesses in FULL COLOR in AutoCAD...I have drawn the 61 through 67 diagrams and I am working on finishing the 68-73 years."

Well...I guess that would eliminate the possibility of you reading the drawing wrong.

I would probably use information from wiring diagrams in the Chassis Service Manuals. Under some circumstances, service technicians could have more than an academic interest in knowing the wiring configuration at the bulkhead connector; GM might have been more careful to get it right (more checks and sign-offs) in that publication because it could have been important.

If LL's wiring diagram didn't agree with the Chassis Service Manual, I would discard the LL diagram for your purposes. One thing to keep in mind is that sometimes wiley characters will deliberately build errors into documents that don't really effect the functionality, but insures that someone doesn't merely copy their documents for profit without building in a fatal flaw.

Your only other alternative is to "as-built" the wiring diagram from an original harness. I know your objective is to avoid examining harnesses, but this wouldn't be the first time engineers have found stuff on drawings that was all wrong or wasn't supposed to be there...underground piping, electrical conduits, sewers, etc. comes to mind...makes project engineering interesting.

[Donald O.]

Re: 1970 Wiring question

Yep. That is me...er I...er oh heck. I does it.

And thanks, glad someone uses or appreciates them.

Don

[Donald O.]

Re: 1970 Wiring question

Yep. That is me...er I...er oh heck. I does it.

And thanks, glad someone uses or appreciates them.

Don