So I had 3:55’s put in several months ago and just got around to messing with the speedo box. I found pin 27 in the middle pcm connector(white/tan wire), cur the wire and connected the blue wire from the speedo box to the cut end of the white/tan wire that’s going to the pcm. Then I connected the white wire from the speedo box to the other side of the cut white/tan wire going to the trans. Found pin #2 on the black pcm plug and tapped for a power source and connected the red wire from the speedo box. Black wire grounded. Took the car for a spin and the speedo did not work at all. Thoughts??