Yellow/black is showing 12v.
I have swapped the vss sensors top to side and have had no change. Strange thing is this not a beater of a car. There's no evidence of modifications or any wire harnesses tampering. Really kinda lost I've run out of things to check

ok I just when for a drive with the side /front vss unplugged. The car drive and shifted fine. No engine light. Strange?

 

The signal from terminal pin A9 (Blu/Wht wire) of the PCM to check for are voltage pulses. The voltage should pulse between 0 and to about 5V or more.

The pulse rate increases as the car accelerates. The frequency and duration of these input pulses are measured and displayed by the speedometer.

1. Put the vehicle in neutral with the ignition switch ON (II).

2. Slowly rotate (over 3 mph (2 km/h)) 1 wheel with the other wheel blocked.

You should see voltage pulses.

 

Since the PCM sees the right vehicle speed, then something is wrong from the PCM to the gauge and the cruise control unit. You are also seeing 4.77V coming from the ground side of the circuit too.

Try unplugging the 14-pin? connector (probably the only connector) from the cruise control unit. Then see if your speedometer works on the gauge cluster.

 

I've tested with wheel spinning no pulses only 4.77v. I did unplug the cruise control box under the dash still the 4.77v. No change. Pin 14? Are you talking about at the pcm?

 

If there are no pulses at pin A9 at the PCM, with the front wheel spinning, inspect the other connectors to ensure they are firmly connected and terminals and wiring okay at the PCM.

PCM may possibly be faulty if the other PCM connectors are okay.

Another test would be to test pin D10 (Blu wire) at the PCM. This is the blu wire coming from the countershaft speed sensor. With ignition switch ON (II), and front wheels rotating, there should be pulses coming into the PCM.

Pin D10 is at PCM Connector D.