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alot of the newer cars use J1939 serial communication. So there may not be a speed sensor wire...just two twisted wires that send digital signals back and forth. If there is one it'll be somewhere off of the transmission or engine...possibly you can pick up that signal off of the alternator. Most likely you're just going to have to go get a haynes manual and look up where the computer finds this signal. There's a chance it'll use the signal from the ABS brakes to determine speed too. Sorry I couldn't be of more help
Posts: 121 | From: Streator, IL | Registered: Jun 2000
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By the way....why does a navigation system (which I presume has GPS) need a speed sensor from the car? The GPS should already know how fast you are going
Posts: 121 | From: Streator, IL | Registered: Jun 2000
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Jbrod- That's a good Question. You would think that if the nav. unit has gps functions it should be able to track speed and direction without a hitch. (Like garmin hand held units)
But I know when installing an AVIC-N1 you have to tap into the speed sense wire and the back up light wire. huh... go figure?
-------------------- Yes this is my sig, no there is nothing for you to read. Quit looking at me, nothing is going to happen. Stop staring at me, cut it out, leave me alone.... Posts: 3026 | From: AZ | Registered: May 2003
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the reason you need a speed sense wire is if you were ever driving under a bridge or have no gps sattilites the speed pulse will keep the unit accurate untill it has sattilites again, some units have the option not to hook up the wire but it will not be as accurate
Posts: 1 | From: toronto,canada | Registered: Jan 2005
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since your using a Pioneer piece, like we use too, I always use to call 1-800-pioneer, they have a department just for navigation and I have always gotten a answer
-------------------- SoundWerx Car Audio SoundXtreme Sundown Audio DC Sound Labs T3 Audio PowerMaster Posts: 6559 | From: Buffalo, NY | Registered: Feb 2001
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