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 Vehicle speed wire for an aftermarket navigation system

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Buicknutt

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Join date : 2012-02-10
Location : CALIFORNIA

PostSubject: Vehicle speed wire for an aftermarket navigation system   Sat Dec 31, 2016 2:32 pm

So I got the pioneer 5200 nex nav. unit for Christmas.

Just checking if anyone here has installed one of these yet and knows the closest location to tap the vehicle speed sensor lead.

Thanks
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Fred Kiehl

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Age : 69
Location : Largo, FL 33774

PostSubject: Re: Vehicle speed wire for an aftermarket navigation system   Sat Dec 31, 2016 4:38 pm

What year car is it?

The VSS wire is the raw signal. Dark green color wire. You should be able to tap the wire to the speedometer. The under the dash speedometer wire on the LT1 cars is dark green with a white tracer. It is brown on the TBI cars.
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convert2diesel



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Age : 66
Location : Manotick, Ontario

PostSubject: Re: Vehicle speed wire for an aftermarket navigation system   Sat Dec 31, 2016 4:46 pm

First of all, the Nav unit uses GPS as the reference for speed, not the car's VSS info. Actually, the GPS tends to be more accurate than the speedo as long as it has a signal from at least three satellites.

There is a module

http://www.crutchfield.com/p_794ADSMRR/iDatalink-Maestro-ADS-MRR-Interface-Module.html?tp=3486

that will interface with the newer vehicles but probably won't be any use with your vintage of Buicks. Its for maintaining the steering wheel controls, OnStar, etc. and also pulls data from the ECM on the newer OBD 2 systems. Again probably not needed for your use.

Nice Nav unit. Wish my Santa was as nice.

Bill
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Buicknutt

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PostSubject: Re: Vehicle speed wire for an aftermarket navigation system   Sat Dec 31, 2016 7:16 pm

Thanks, its a 95 sedan. It has speed limit warnings in the software which is another reason it wants precise speed input.
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phantom 309

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PostSubject: Re: Vehicle speed wire for an aftermarket navigation system   Sat Dec 31, 2016 9:00 pm

check pass side kick panel i think there's a green and white striped wire there,.at least there was on my 9c1
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