I managed to break the safety catch on the wiring harness/plug module a long time ago, and have finally replaced the harness plug. The pic shows where the sensor is located on the coolant bypass behind the plenum. The other pic shows the secondary, yellow-colored "locking nose" that you press inboard after you've inserted the metal contacts. I'm not certain, but I think the new design is supposed to lock or align the contacts.

Part Number:
90980-10737 Housing, connector F, $8.27

Hope this helps someone.

 

I just used a ziptie to keep mine on there, I've broken probably a half dozen of those clips on my truck. Good to know though, in case that ever comes back to bite me.

 

I figure that the new clip will last another 20 years, so the $8 is worth it to me. I did the same type of fix when I busted a fuel injection plug module 'cept that plug cost $7.59.