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You don't as it does not have a cable. You replace the speed sensor instead.
No, the speedometer is driven electrically from the PCM.
The red cable is the positive and the black cable is the negative. The positive post is slightly larger.
I assume you're asking how can you tell which is positive and which is negative? The red cable is positive in the black cable is negative. But if they are not color-coded the positive battery post is slightly larger than the negative battery post. If you try to connect the negative cable to the positive post it would be a tight fit and if you connect the positive cable to the negative post it would be loose.
On a vehicle the red is positive (+) and the black is negative (-). If they are not color coded the cable connected to the starter is positive and the cable connected to the engine or chassis is negative.
TPS usually means throttle position sensor, and it doesn't have a "cable".
would like to know where the speedometer sensors are on a 1999 villager
Red cable to positive, black cable to negative.
on my 2000 I disconnect the positive battery cable and press down the brake pedal for 30 seconds and that will reset it
Speedometers are not driven with a cable anymore, they are electronic.
take it to auto zone and ask them to check and then clear the codes or remove the positive battery cable and press the brake pedal for 30 seconds.
Red is positive. If they are both black then the cable that is connected to ground is negative and the other cable is positive.