VSS question
Vehicle speed sensors... I thought only ones equipped with ABS had it?
I was reading this thread: https://www.miataturbo.net/aem-59/launch-control-you-48648/ This part was what caught my attention: Sadly, the instructions shown for this require the vehicle to have a vehicle speed sensor (VSS), and from my understanding, only the automatic 1990-93 miata's had accommodation for this [94 and newer can ignore this because they do have it]. seems by that thread the back of the gauge cluster will not work? Or am i misreading parts? looks to just use the clutch switch... so no way to use the VSS traction control or anything thoughts? |
All '90-'97 Miatas have a reed-switch VSS built into the speedo, which is driven by the speedo cable. I know that on the 1.6 cars, it was only wired out to the harness on vehicles equipped with automatic transmissions or cruise control (not certain about the '94-'97 cars) however the switch itself is present on all NAs. On the non-auto/cruise 1.6s, you simply have to run a wire to the back of the speedo.
The switch provides a momentary closure to ground X times per wheel rev, where X is a non-zero integer that I once knew back when I had an EMU, and have long since forgotten. It is available at pin 2F of the instrument cluster. |
only MS3 can do anything with VSS.
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Wow, I totally missed the part where we wanted to wire this signal into the MS. Yeah, it's there, but it's not likely much use to you. :)
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ok, thats what i needed to know, i see at MSPNP has stuff in he traction control for instance for VSS.. but it makes sence if the hardware itself is not configured to accept that signal.
Seems a good reason for me to start planning to build my own V3 now. |
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