How does the electric speedometer work on a 300SD? I am thinking of putting the Benz trans in the Jeep, the 904 torqueflite is a POS!!! I have the gauge cluster from the Benz, I was going to put the speedometer and tach from the Benz gauge cluster into the jeep dash. I just was not sure how the speedometer was wired. I know it gets a signal from the tranny.

John