I saw this free combine harvester port by Stefano96, found myself humming a silly ditty about roller-skates...
https://www.deviantart.com/stefano96/art/DL-TF2-Enhanced-Combine-Harvester-Prop-902510116
Free Noesis ripped the SFM format to an OBJ mesh and a mapped JPG texture set. When I tried to match them, I realised there were two object ''groups'', for main body and cab-glazing, but only one ''material''. Looking in OBJ file with free Wordpad found only a single USEMTL call. I changed this to match its group''s name, added a second for the other material.
The texture map is ''busy''. To get the single LHS ''loading'' and 2+2 ''driving'' lights to glow in Poser using ''super-ambiance'', I had to mask them to white, with rest black. Took me several tries to get it right. As lights were hued amber to match the body, would have been *much* easier if I''d looked on the alternate red, green or blue texture maps. I''ll post ''finder'' map in comments.
After several tries, OBJ imported to Poser at ~0.75 % of original scale. I twirled it level, dropped it to ground. Applied the Diffuse and Normal maps to body material, then the light mask to ''Ambiance'', dialled that up. The glazing was a balance between transparency and a green hue to show it was there.
I posed LaF on the top step in her ($$) Rendo ''combats'', iterated lighting until scene looked okay. A 14 pixel-sample test render showed no problems, so I got serious. This is superfly, 96 pixel-samples, progressive, 1024 vols & buckets, using both my twin graphics cards.