looks like it`s 1 of them weeks, corrected the power window issue now as soon as i start the engine or put the ignition on the speedo needle goes all the way around past the 180 mark :/, any ideads people ?

it is now all the way around all the time, even with the key out, if i tap the binnacle it does move but goes straight back almost as if it is magnetised ?

I would hazard a guess your speedo has a kph to mph conversion as the issue your having is very typical of a failed converter, the needle been stuck around to the right is just because it cannot power back to rest. If you take the cluster out and remove the glass you can blow on the needle and it will return, that is how light they are.

 

The converter will be either added on the back of the cluster or loose and wired into the loom, as a temp measure you could take the converter out of circuit, the speedo will read in kph again but will prove the problem, a new converter from here >>

 

 

https://www.ebay.co.uk/itm/NISSAN-300ZX-PULSAR-SKYLINE-SPEEDO-CONVERTER-DELIMITER-SPEEDOMETER-CONVERSION-/120446038718

 

 

 

 

Jeff

i will give it a go ty