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Just bought this car and notice one of the wires had fallen out, guys have any clue what sensor this is or how i could rewire it?

 

It looks like either your reverse sensor to me or o2

 

its broke off from whatever sensor is right below the distributor cap, was driving fine though besides a pulsing idle. Missing the o2 sensors as well, there any decent aftermarket ones out there?

 

Check to see if you have reverse lights. If not its fairly easy to wire them in, and for the o2 sensor go with oem or find a decent one at a junkyard

 

It's the reverse wires. O2 sensors have different wire colors.

 

found a manual and it's actually the coolant temp sensor >< now i get to try to find a spare connector with wires laying around

 

That should be the coolant sensor. I see its in the head right there to the left.

 

I'm pretty sure that's a 02 sensor as mine looks and is in the same spot. You can easily tell if the sensor is gone or the wires are gone on the header/exhaust manifold. if you still have both parts i'm sure wiring them together then wrapping it together with electrical tape should be fine. But to be safe you should buy a new one. That is. If it is a O2 sensor.

 

Throw a few more pics on here. After looking around they may actually be the upper o2 sensor. More pics will help

 

Looks like the coolant temp sensor. Not o2 because they are 4 wires instead.

 

Definitely this.