window rolldown help

i need help rolling my window....the wire that i tested to do this tests at a NEGATIVE (-) at rest and has a POSITIVE (+) pulse when rolled down with the window door switch...how can i wire this up to give a positive pulse while providing a negative pulse at rest......thanks...

I suggest a window module for this type of installation. A single realy is not enough to do this type of function without eventually burning out the window motor. A module is only $ 35 - 50 and a new window motor is $ 100 + .