i have just brought a universal remote central locking upgrade for my ford escort mk6 1998 i have got it working but it only opens the door and will not lock it i have checked all connections and they all seem fine i have found the lock and unlock wire by testin with 12v testor when they are locked and unlocked then i had my wires am i doing this right

i have a black to earth, a red and yellow to 12v, plus my white lock wire to puple/white wire and other one to white wire whitch have tryed many varations but no luck plzzz help