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VSS wire for 1989 Mazda RX-7 Convertible


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audioduck 
Member - Posts: 25
Member spacespace
Joined: February 11, 2005
Posted: January 09, 2006 at 7:06 AM / IP Logged  

Need to find VSS wire for 89 RX-7 in order to hook up Autosound (Speed sensitive volume) for Blaupunkt Acapulco MP52 head unit.

airandsound 
Copper - Posts: 69
Copper spacespace
Joined: December 16, 2002
Location: United States
Posted: January 09, 2006 at 3:57 PM / IP Logged  
Don't think pre 90 models had a VSS
audioduck 
Member - Posts: 25
Member spacespace
Joined: February 11, 2005
Posted: January 09, 2006 at 4:20 PM / IP Logged  

airandsound wrote:
Don't think pre 90 models had a VSS

Hmm, I thought it did.  I've done some investigation on the wiring diagrams for the car and found a wire (G/R if that matters) that goes between the instrument cluster and the cruise control brain which I suspect might be VSS or similar.  It also has speed sensitve power steering which, it was my understanding, is VSS controlled. 

I wonder if it would be safe to experiment with tapping the headunit VSS lead into the wire I found on the wiring diagram.  Anybody have any opinions on this? 

(I'll probably to it anyhow - can't resist the temptation.)

sparkie 
Platinum - Posts: 2,061
Platinum spacespace
Joined: November 06, 2003
Location: Canada
Posted: January 09, 2006 at 5:19 PM / IP Logged  
Use a volt meter set on an A/C voltage scale and measure from a good ground to the wire while moving forward. If you get an A/C signal you should be good to go.
sparky

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