Hello everyone, regarding orange4boy question, all those Ford Map Sensor's should be operating in the frequency range of 92-160 Hz, so if you're VSS is sending the signal at a rate of 8000 PPM, you should be fine by just substituting the VSS with the Map sensor signal. Be sure to find a one similar to the one I previously posted. Here is the
link of photos.
Keep in mind you would like to be able to switch between both signals, just in case you decide to maintain a constant speed or a constant load. Is it for the Toyota Previa?