Well I finally got a 1976 914 in June and have been going through it fixing electrical problems. Most of which are now fixed. When it came to the turn signals, the high beam flasher worked sort of, you had to pull the switch twice. So I pulled the turn signal switch and noticed that some of the plastic near the contacts was melted. Look for a replacement, I checked a couple sites online only to find that the switch was NLA. The switch looked very familliar, since I have been a Beetle guy up untill the 914, so I started digging through some boxes of Beetle parts, that I saved because you never know when you are going to need a door strap for a 71 Ghia or something, I found an old turn signal switch from a 72 Beetle that wouldn't cancel and low and behold it is identical to the 914 switch, the Beetle switch wouldn't cancel because a spring clip was missing the one from the 914 was the same and now the switch works. The turn signals and high beam switch work now and with the key off, if I leave the turn signal on the signal lights on that side of the car stay on, is that normal, my wife Mercedes has a similar function.
Does anyone know of a VW/Porsche cross reference that might list parts that will work on both cars?
BTW: The 72 Beetle Turn Signal switch is readily available and inexpesive.
Now I just have to get the Fresh air blower working, I think it might be the dash switch. I also need the e-brake switch which looks like a Beetle door contact switch.