Don't cut it off,tuck & tape it back best you can if your going to use it on a vehicle.
I've seen a few stock guys looking for this harness,only to find em with the idle stop wire cut off. :(

There's no way I would cut it. I'll either use it and get a solenoid or get another harness and run without the solenoid.

I'd still like to know if the car would have come with one originally. There is nothing in the assembly manual that I could find and it seems that some cars had them and others didn't. I have seen pictures of cars with an automatic trans having them but have not seen a picture of a small block with manual trans having one.

Does anybody have a survivor with one?

Its for cars with Auto trans. T-350 or T-400. Look on UPC M-35 sheet A25. Manuals wouldn't need them. Prevents dieseling/run on after shutting off.

I found it last night in the AIM. My car won't be getting one since it's a manual trans. Looks like I will have to settle for a repo harness.

Thanks to everybody who helped out!