Need help car temp. Ignition coil problems

[4dRcOrOlLA]

Okay so yesterday I change my ignition coil n now my car temp dosent work! Didnt notice till I drove to work, is therea possibility that I may put the wire to the coil wrong? The way id put the ignitioncoil wire was 2 brown wire on top which is positive n the black wire on the bottom, so three wires total.not knowing the temp on my car is scaring mepleez help thanks

[90 GP]

You probably have a loose /disconnected wire on sending unit which is on/near thermostat housing area which is close to distributor where you were working.

[4dRcOrOlLA]

Yea I was think the same thing but was woundering if ill put the wire wrong n if it wouldve cause this, the sending unit and the coolant temp both would cause this if there no conection right? And can I test these with a multimeter? Thanks for the responce

[4dRcOrOlLA]

Problem fixed, wen I was lookin at the sending unit there was a wire unplug ; looks like the ground wire so plug it in n now it works! Thanks for pointing me at the right direction