91CivicSTD1

I'm putting a b16a OBD-0 into a 91 civic std, my question is about the tps everything i have read says switch around the two outside wires, on my std harness the wire colors were yellow/white and grey for the outside two the grey wire terminated into a ground. On the harness that came with the b16 I dont see a similar ground for the tps also when i looked a the wiring pinout diffrences between the std and pr3 I saw the pr3 had 3 pins dedicated for tps and std only has 1 can someone set me strait on what i need to do other then swa the outside two wires if anything thanks