I'm not sure if this is of any help AT ALL, but I'm having my power window relay click when I press the switch instead of actually activating the circuit (R33 GTST). Another member on here had the same problem and apparently filed the contact points... I GUESS there was some gunk on there, or the metal wasn't very conductive anymore, so by filing it, it exposed a conductive surface again.
Might be worth a try? Might not, but hey, who knows
I'm going to try it to my relay when I get a chance, and some sandpaper.