I recently discovered a blue wire with a round terminal (the type that is usually for grounding something) that was covered with electric tape but not connected to anything. It is located in the engine bay on the passenger side on the outermost side of the firewall. So i m not really sure if it should be hooked up or not. Any ideas would be greatly appreciated. Thanks.

 

My guess is that it is just used if you don t have an AC. But I m not sure.

 

Hey I posted the same thing on a nother site. I have a picture of it to help illustrate what you are talkin about. Ive seen about 5 or 6 other cars with this same thing. People have told me its a ground, because of its big connector. Others have told me its part of an option that my car didnt come with. Who knows. Its not causing me any problems tho. If you figure anything out let me know.
Justin

Here is the post that I have up from before...check it out:

http://discussions.gmforums.com/show...threadid=25883

 

I m now pretty sure that it is the G115 connector on page 8A-20-1 on the lower right side of the page.(89 manual) I n the box it says: HEATER ONLY; WITH AC THIS TERMINAL MUST NOT BE GROUNDED: