Here's the scoop, I have a 93 trans am with a obd1 conversion from a 95. I recently did the T-56 swap and hooked up the purple and yellow wires to the vss. I have a speedo reading, but it is obviously slow. 70ish on the freeway reads about 25mph. Can anyone help me get this thing wired right for the speedo to work. All the guages work fine minus the speedo and the trip. Thanks in advance for any help. If needed to make this easier you can email me at volvop544@aol.com

 

what did you do with the wiring harness and computer from the 93 setup?

 

i still have the harness missing some ends from the swap, and the pcm in the garage.