98 Tacoma V6/4-wheel expert - HELP, please.

For the past (2) Weds, I visited (12) junkyards and (2) dealerships. As soon as the counter persons see me, they instantly assume I am a dumb female who ignorant of engine…. Wish I show them how incompetent I am on the race track. Total waste of time.
I aided in putting a new engine in this truck. Since we did not take it out, I am confounded of the following and I hope you guys can help. I need to know what they are and were to purchase them.
Issue 1 – The mysterious wire – what is this? Where does it go from attached end. What are the broken ends? Where do I get replacement
What's this wire.jpg
Connector to attached end.jpg
Attached end.jpg
Broken Ends. jpb

Issue 2 – Metal tube behind the engine – Where does this go?
Tube behind engine 1.jpg
Tube behind engine 2.jpg
Tube behind engine 3.jpg
Issue 3 – Open tube – Where does this go?
open tube.jpg

Thanks so much guys.

 

After pouring over the manuals, the wire is the knock sensors wire. Ya know where to get one? Thanks so much

 

Kuneff, rebuilt a tacoma and has replaced almost every part. He may be able to shed some light on what these mystery parts are.

http://www.tacomaworld.com/forum/1st-gen-builds/63917-black-beater.html