Does anyone know the pinout for the 8 pin plug that goes into the speedo?
My manual shows a lot of stuff but that isn't documented. I expect it will be the same on all M-12 and M-400 cars.

What is the minimum switching voltage needed for the Speedo to measure. I good strong pulse from the speed sensor. I expect anything between 5V and 12 V should be enough ....but it would be nice to know for sure. My speedo seems to be dead.

M12-3R 2003 #005