Speed Sensors

[Michael_H]

I have an Alpine Navigator system which came with the vehicle when I bought it second hand. Previous owner had it installed and apparently it was an expensive unit at the time. It now started to act erraticly and not following the car very well. Called Alpine tech support and was told to check if the navigator detects the speed of the car. Long story short, there is a cable which connects to the speed sensor; navigator reports speed at "0" no matter actual speed. I lookied into it a bit, and I cannot figure out where I need to ensure this cable needs to connect to. Apparently there is more than one speed sensors in this car: 1998 Tdi Auto. And why are they installed in the gear box? Isn't it supposed to be somewhere around the wheels? Any ideas?

[seatkid]

There is a speed signal to the radio head unit called the "gala" wire used to control volume/speed.

 

However your satnav should show speed even without this signal. Check the GPS antenna.

[Michael_H]

There is a speed signal to the radio head unit called the "gala" wire used to control volume/speed.

 

However your satnav should show speed even without this signal. Check the GPS antenna.

 

What is the connection between radio and speed? Regarding the antenna my GPS unit works with both signals: speed and antenna. ANd how would I find this wire you are referring to? Thanks for your reply.