I was swapping a 6.2 Diesel, TH400 and NP241 in my K5. There are some things I am not sure what is (but have my guesses). So before I connect those things I want to be sure what I should do. TH400: 1. I have no clue what this wite wire is for. 2. I am 99% sure this connects to the vacuum pump: 3. I think this is for the speedo: 4. I dont know what this is. This vehicle had a trans heat gauge wich I think was connected to the transmission (was a Navy vehicle changed for towing airplanes). 5. Some plug..... 6. And another one........ And from the NP241 7. This transfer case had those tvo irons. I dont remember those from my NP208 and dont know where to connect them. Well, thats it for today. thanks, Jon H.