A speedometer has 3 wires on it.
IG - This goes to the key.
Ground - this goes to battery earth.
S - represents the word signal. This goes to the signal pin of the speed sensor at the gearbox.

On the gearbox there is three pins.
IG - This goes to the key.
Ground - this goes to battery earth.
S - represents the word signal.

A few hints. Read the back of the printed circuit board and look for the above symbols. Start with 5v. If no go up the voltage to 12v.

Enjoy. Kind regards Rex Short in New Zealand.

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