156 Wiper issue.
Don't know where to start with this one, so i'll start from the beginning.
Bought the car about 2 months back, wipers worked fine except on full speed, intermediate and constant worked fine as did wash/wipe, few days back in glorious sunshine the wipers decided to wipe all on their own, wiper were in the off position AFAIK, and no rain in sight( car seems to have the sensor for auto wipers as well as the control box on the scuttle but the stalk doesn't match what is in the book for cars with auto wipers), but anyway so it did that and reset and never had an issue with them till yesterday when I started the car the wipers headed up the windscreen on their own accord, again wiper in the off position but they didn;t reach the full they just jerked up the windscreen, drove for 45 minutes and they just slowly jerked up and then jerked back down, before eventually having to pull over and force them into neutral/ park. didn't have any more issues with them so thought the motor had burned out.
So today popped down to the local breakers, picked up a motor fitted it, plugged everything in and without the linkage attached the motor is still refusing to turn, it jerks the spindle but just won't rotate, Did have it rotating once but that's all it did it just rotated sped up when the settings were changed but wouldn't stop when it was turned off.
Any help would be much appreciated as I've exhausted all possibly issues save buying a brand new motor for it'
Car is a 2004 2.4 Veloce saloon.