Sometimes these installers don't give a crap about the work they do so I just want to make sure It was done right. Can anyone tell me how I can tell if it's installed correctly.

Would the navigation system still work if the wire wasn't connected to the speed sensor??

Not sure how you can check if its connected.


The VSS wire doesn't need to be connected, but without it you won't get most vehicle dynamics and if the GPS loses the signal, it helps to track how far you've driven since the GPS lost the signal.

If you mean the screen that has the speedometer, with 2 other gauges etc... That works. When I drive I can see the speed increase. Does this mean the VSS in connected?

Yes. You can also check the speed pulse signal under 3D Calibration or under Settings in main menu then Hardware Info then Connection Status.If VSS wire is hooked up you will see this climb from zero as you start out.

Thanks!!!

What kind of car?

2007 Ford Mustang GT Coupe...when I drive, the Speed Sensor number DOES NOT go up but the Vehicle Dynamics Speedometer does?????????? VERY STRANGE!!

Any Ideas????

The speedo display is registering speed off of the GPS. Your VSS wire is probably not hooked up. It's a gray/black behind the radio.

I believe you're right. I don't want to bring it back to the stereo shop though. They already messed up twice and I don't trust them. I'm wondering If I should just keep it the way it is.

It's not too difficult to fix it yourself, the wiring is right behind the radio, connect the pink wire from the radio to the gray with a black stripe on the radio harness.

The new stereo shop I'm going to is saying that I need a piece for my unit to work accordingly with the VSS. He said something that's made by SoundGate Audio (or something like that).

He said that he "discovered the 2007 Mustang GT Coupe's speed sense function is done digitally through a can bus system which requires a rather pricy interface." Is this true????

If it is...is the speed sensor that important to hook up? Please help.

Like mentioned before the speed sense is in the radio harness... i believe from the F150 I have had that had it there. The "interface" line is not likely true. Check a wireharness and see what the added wires are. You can also check out a wiring site like the12volt and likely find info there.

Ok this should help you if ou can't find vss at the radio harness

Speed Sense dk. blue/yellow ac PCM, top plug, pin 3 The pcm is on passenger side of the engine compartment.

I'm not going to that shop anymore. How about I pay one of you guys to do it?? How far are you from the George Washington Bridge and are you willing to help fix the popping noise in my car and attach the speed sensor wire???

Let me know. I'll come to you!