All my gauges are stock and upon purchasing the car the temp gauge was broken (stuck in the full down position). I purchased one in working condition from my buddy, and after installing it, it bounces straight up after turning the ignition to the on position, and it gets stuck there. I put a piece of cardboard there and then it got stuck at the bottom, I just want to know what the hell is going on

 

Check the sender - driver head between #1 & #3 plugs.

 

I don't understand the cardboard comment, but what you describe is explainable by a sender wire that's grounded when it shouldn't be. If the wire running to the sender unit between Cyl 1 & 3 is grounded (zero resistance), the Temp gauge will go full pop when you turn the key to On.

 

I bought a new sending unit and wired it in and my temp gauge still doesn't work, i know that the ground wire can just be grounded to the frame, and it it, so should I run the other wire that runs to the gauge and make sure that it is in good condition?

 

Crack open the cluster too. The needle might not be oriented property on its pin so you might try taking it off and setting again