after curing 99% of mechanical problems i decided to move onto electrical ones, my 1st one which i'm hoping is quite simple is the passenger side window, when i brought the car there was no window regulator in it but the guy said there was a second hand one with the car just he hadn't got around to fitting it, the fitting itself was easy but for some strange reason the conector from the motor was different the new motor had connections side by side the connecter on the car were on top of each other, i made up some link wires with new spade connecters but now as soon as i connect them the motor runs tried switching wires around still runs just backwards, i'm sure i seen this problem on wheeler dealers on a 306 and it was the drivers side switch whitch was causing the problem, could anybody give me any ideas before i wade in and buy one.
the other and more scary thing was i managed to get a second hand blower motor fitted it last week and all was fine, its worked in the times i've tried it since, but today it was dead, i checked to see if it all connected still and to my horror the connecter block (2 wires) had melted

any ideas what may have caused this to happen?