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This is the second video in my trouble shooting process for an unresponsive tachometer.
The tachometer worked fine up until a few months ago. Then one day it stopped working.
I tried cleaning the pins on the instrument cluster and the sockets in the instrument cluster wiring harness plug.
All the lights work fine but the tach is still unresponsive.
This video details the resistance and voltage checks I performed on the sockets in the harness plug. Data is key off, key on and engine running.
Have a look and see what I found.