Need advice on electric choke

[Mac Arnold]

I connected the electric choke (which wasnt connected previously) when I installed my new wiring harness. When I start the truck I have to keep the gas petal pressed down a little until the engine reaches around 120 degrees before it will idle on its own, once its warm it runs fine. It has a Demon carb with electric choke. Could it be the elctric choke isnt working? And does it need to be replaced? I am brand new with working on a truck like this so if someone could please share some info, I would really appreciate it.