Hi all....
I did the square facia to round dash facia swap this weekend. I have the Tacho and all lights working .
But no SPEEDO
I have checked the cable and it is fine at both ends
Symptoms;
1) The needle sits LOWER than Zero km/h As in all the other (and my other) speedo needles seem to sit on Zero
2) The needle doesn't move at all - it doesn't twitch or jump
3) when spun backwards with the drill it seems to wind backwards

IS the speedo 'unwound' as in has it gone around 1x time already and wont wind further?
OR is there an electrical problem

I suspected the Speed Amplifier that no one knows what/how/why it's for. I have it wired as per the pictures in Techwiki
-red out of tacho conenected to black out of speed amplifier
-black out of speed amplifier to circuit board of dash
-green unused
I thought I'd try a few different combinations of these wires. DO NOT connect green and red without black. - smoke comes out of the speed amplifier!

Any suggestions as to my drama and how to fix appreciated

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