Cummins N14 water temp sensor for ECM vs. dash gauge?

Hello, got a Celect Plus N14 on a 2000ish freightliner FLD. Dash gauge isn't showing any water temp, and when ringing out the signal line for the dash gauge it leads to an empty connector at the front top of the engine. The water temp sensor for the ecm (which is a smaller connector) is connected to the water temp sensor and reads fine for the ecm, but where should I give the signal for water temp to the dash gauge from? That connector was just zip-tied away and wasn't connected. Made artificial signal and dash gauge is in working order. Thanks in advance!

 

It has two wires. Ihave a one wire sensor for over temp light, 2 wire for water temp to Ecm and another bigger 2 wire for the water temp gauge. That bigger connector is hanging and I do not know where to plug it in

 

Can

can you send me that whole diagram please?

 

Thanks for sending that. There was no sensor I could use for the dash gauge so I tapped off of the signal of the water temp sensor to the ecm

 

Yes sorry by tapping off I mean I had a voltage buffer to use to not mess with the original signal so basically it copies what the ecm sees without altering resistance. Wish there was an easier way though since the connector was there and nothing to connect it to