Streetrod19772000

I have all my wiring figured out except these two existing plugs that came from the engine bay and plugged into the dash harness in right hand kick panel area. there was a 16 pin plus these two. I have figured out the 16 pin but these two have not been mentioned by anyone on this site. one is 8 pin and the other is 20 pin. This is an 88 3.0 automatic truck and here is the picture of the two plugs. where do they go and what are they called. 16 pin is 1H1 I believe.