That'* your external temperature sensor. Among other things, it gives you your outside temperature reading if you push the right button on your HVAC control panel. I would guess it also feeds the reading to the ECM.

That'* one of your air bag sensors. If I recall right, there are three altogether: one up front, one on or near the firewall and one inside. It takes a firing signal from two of the three sensors within some really-tiny slice of time, basically simultaneously, to trigger the airbags, so in other words they won't go off if you accidentally hit the sensor with a hammer. There must be agreement between two of the three sensors before the system will fire.

Ahh thats nice to know. Kinda strange having all these bells and whisles on the car. My 88 le didn't have much for bells and whistles. My first car which was a 73 dodge dart with a 318 didn't have much of anything on it. Lol it had a standard 1 speaker am radio.

My second cooler is in front of the stock cooler, with a 1/2" air gap. I'm saving the other side of the radiator for an intercooler :P

The cooler comes with flex hose......you just tie in to the existing system. OR you can get the rigid lines that tap right into the radiator where your stock lines go, then cut the stock lines and attache flex tubing to them for the return path.