Front wipers inop (probably not the first thread)

[Bmc2000]

hi people this is my first post on this forum and i need your help, i have a mini cooper s R53 on a 52 plate the other day the windscreen wipers stopped working so checked the fuses and swapped them just in case, so decided to remove the motor to check the connection for corrosion ect on the terminal but all was good the linkage moved free and easy with the motor disconnected ( i beleive this was a problem a while back) i didnt have a volt meter at hand so made up a bulb with a couple of wires to check for power going to the connector but i could not find a live? is there a reason for that? but there are 2 wires that earth out! does anyone have a wiring diagram or a link for a site with it. or if anyone has came across this your help would be appreciated.