Emissive color has to go to emissive/heat in nodes like in the scenes i've made. It is mid-poly model with textures, 2 alternatives for the textures are given.
BLEND (Blender, filesize: 170 MB), FBX (Autodesk FBX, filesize: 6.98 MB), TBSCENE (Marmoset Toolbag, filesize: 8.52 MB)