Speed Pulse for GPS
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What is the best location to grab a speed pulse for a GPS on a 1991 964? Can you go right off of a Wheel Speed sensor? or is there a source in the cockpit?
Thanks,,
Lon
Thanks,,
Lon
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Just out of interest - why does GPS need a speed pulse? My GPS system knows how fast I'm going because it can tell from my position change. What does GPS do with the speed signal?
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It calculates where you're likely to be when the GPS signal is temporarily lost - for example in a long tunnel or driving in the city with tall buildings. Should be quite useful, an advantage of a fixed system over portable.
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On Alpine and Kenwood GPS it must have the pulse to provide guidance. It can display your position without the pulse, but it wont enter guidance mode.
Lon
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Unforutantley we tried the green wire from the speedo, it has speed readout, but not pulse. The GPS must have the pulse or it refuses to function. I went through the exact same mess with my Pacifica, it was a pain, but now it works great.
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There is a speed pulse fed to the spoiler control module, this signal is what the Becker Traffic Pro uses. I don't remember, and can't find on the web right now, which wire it is exactly. This is very easy to get to, just up above the passenger footwell.
Chip
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Sorry, another dumb question... can you put a Becker TP in a 964 and if so, how. I've got one in my 996 and I actually prefer it to a map screen. TIA,
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Chip,
Thanks, I would guess it would be the same. We have it working now, but I am certain we need to change it. We went from the Pulse Generator module for the RF wheel. But now it is causing a weird minor flutter on the ABS as the car comes to a stop. So I know that isnt good.
Lon
Thanks, I would guess it would be the same. We have it working now, but I am certain we need to change it. We went from the Pulse Generator module for the RF wheel. But now it is causing a weird minor flutter on the ABS as the car comes to a stop. So I know that isnt good.
Lon