Well you get in car drive 2 miles / 5mins roughly down the road and speedo goes nut shooting up to 180 mph, off the dial up and down like a yoyo then dead! sometiems it then goes back to mormal for mile then nuts again.
Now what i didnt realise till i turned lights off on road to test was,when my lights are off speedo is perfectly fine and when lights on it goes nuts, this happened last winter but then fine in summer time.
anyone got any ideas?? it must be something to do with the lights, coz guarnteed whatever needle is doing, turn the lights off and its fine.
thanx
James