I have just been given a 1988 Vauxhall Cavalier GL (Auto) The drivers e/w switch, when pressed simply jumps the window down about 1.5 inches then stops. I then need to keep pushing button again and again for it to keep going down I'm assuming the relay is not working correctly. It isn't in the fuse box under the bonnet, or in the drivers compartment (I know this as pulling out relays still allows teh windows to work) Any idea where I can find it? Cheers