That was exactly my thought. There's a lot of information available regarding the old style switches, when I saw that mine was full of little boxes I figured I was SOL. Then a forum member send me an email saying that they were cleanable. I figured what the heck. All that I cleaned now work like new.

Mine also seemed to be working ok, and making good contact. All I did was insert sandpaper between the open contact points, lightly hit both sides, then rinsed with electrical contact cleaner. I'm thinking that there was a light buildup of corrosion or dirt, because when I was trouble shooting I would see 0.3 V going through the switches in question. Obviously it doesn't take much to prevent them from passing a full 12 V.

Any more details you could give me on that Audi powered 914? As the former owner of a 951 and '70 911T, I love to see an interesting Porsche.