Can anyone please give me the name and functional description of the
engine part.......and associated wire
in this photo..........circled in yellow in the photo at the below
webpage link:

*_http://www.esnips.com/doc/0111307c-eade-4224-8d85-c454837d7216/wire1c_*

Comment:

A friend is fixing up my van  after lengthy storage period, and has
limited experience with vanagons.

*_He wants to know what this loose wire, circled in yellow, should
connect to, and where? What is its purpose? _*

He said that he touched it to something and it seemed to alter the
engine rpms......

Thank you in advance for your help and advice!

James/California