Does anyone now how I can check if my speed sensor is working as my speedo is not working it was but I have since taken the dash to pieces and had the speed sensor above the prop off.
Thanks Matty

Does it have a led on the rear of it ??

I had a led on the old one and it did not go one so put a new sensor on it but this does not work although it does flash the light.
How can I check at the speedo it has live, earth and the sensor wire.
What do I measure and where.
Thanks Matty