My 1970, 914 has 4 relays, from right to left: The rectangular Combo, 1 round one, another round one for the fog lights and on the left end, an empty socket for the sam size round relay. This empty socket only has a red and brown wire to it and I haven't traced them yet.
Does anyone know the purpose of this end relay socket?

the haynes manual says (page 128, lower right corner):

right to left:

A. Light Dimmer
B. Fresh Air Fan
C. Headlights
D. Door Buzzer


Andy

Thanks, I did finally figure out that it must be a buzzer due to only having 2 wires. Does anyone know where to get one? They don't seem to be available. Most people probably pull them out to eliminate the aggrivation, but I'd like to have one.