Electronic Speedometer Wiring

[The Turk]

As part of a G50 conversion into my 75 I need to wire for an electronic speedometer.
I’m by no means a wiring wizard so I need to verify what I think needs to be done.
The back of the speedo has four connections, here’s how I planned to hook it up, if you have wiring experience please let me know if this is correct.
Thanks.

+ connects to switched 12 volts
- connects to ground
31b and A connect to the two sensor wires

[Early_S_Man]

What year car is that speedo from, an SC?

One of the sender wires goes to [-] ground, the other to 31b, and polarity doesn't matter-- either wire at either location.

Terminal 'A' isn't used, as it is an accessory output terminal that goes to cruise control or Oxy Sensor Mileage relay -- if you had one!

[The Turk]

I’m not sure what’s it’s out of, here’s a picture.
So I’ll hook up the + to switched 12 volts and the - and 31b to the sensor.
Thanks for the help.

[Fishcop]

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