[mrnelectro]

Lift the clocks off. they come out with a little force and check the cable is plugged in the back of them properly.

+1

and if that do not help, check grounding wires on LCD wire loom cables + ECU grounding point (the one with ring terminal that goes to negative terminal to ECU).

The wacky "full digit" syndrome is either LCD data connectivity issue or grounding/noise.

ECU is not the suspect.

 

[mrnelectro]

Any idea what color that wire is?

When I get back from work I will have a look into wiring diagram