So much for relying on my memory. I looked at his notes and the electrical system is 87 instead of 89. He notes that the same ECM was used for several years.
It has a Dakota VHX dash and the manual says " for an ECM or cruise control, the SPD OUT terminal can be used. This terminal can supply a 2,000 ppm or 4,000 ppm signal."
I can see a wire connected to the SPD OUT terminal. I will have to trace it to see if it goes to the ECM. I know the dash has not been calibrated yet because I installed the buttons that control the dash. I was going to calibrate it and zero the miles on his birthday. Whoops , that was 3 weeks ago.
Last edited by Curtis Jr; 10/15/2024 3:02 AM.