An FYI if anyone else is searching with similar issues.

The speedo in my version 6 sti stopped working.
All other functions of the cluster still function,
lights tacho etc. I tried with 3 clusters in all.
All showed same issue.

Now for the weird part. The normal play of things is
that the vehicle speed sensor would need replacing,
but... my cruise control and anit-hijack are both
still working.

Both are connected to wire 10 in the i12 connector
on the back of the cluster, less than 10cm from green
connector. Cruise engages and hold speed perfectly,
never drops out. My anti-hijack can sense the car
is moving and will lock the doors correctly every time.

Anyway, the solution was to disconnect the cruise
and anti-hijack from the i12 connector and presto,
the speedo started working.

Through a process of elimination I found it was the
anti-hijack that was somehow messing with the signal
on the wire just enough to upset the speedo but
not the cruise.

Anyway, solution was to put a diode in line with
the anti-hijack and it all works again. No idea
why the anti-hijack was suddenly having the
issue.

Thought I would share, and perhaps this will help
someone who is having a similar issue and may save
them replacing the speed sensor unnecessarily.

__________________
[SIGPIC][/SIGPIC]

My flame suit is on. Give it your best biatch.


[COLOR="Red"]My STI's carbon emissions are offset by killing puppies.[/COLOR]