Still having troubles with my speedo.....It starts working after about 5 miles....I have checked the wiring loom down to the sensor plug as in the Haynes manual and all O.K. .....But checking the Pink + and the Green - the voltage dose not fluctuate as they say but is a steady 5 volts....Does this mean it is definitely the sensor as I don't want to fork out the ? 150 only to find the same problem...."HELP!!!"