There is also a fairly rudimentary printed circuit, with relays into which feed two switches mounted on passenger shelf. One seems to be on/off and the other a form of attenuation (I think).
There is another associated slider switch beneath the central instrument console. Control is by key in driver side door column.
Works well on door opening but I think it probably does more, noting the trembler switch.
Can anyone direct me to a circuit diagram or perhaps give chapter and verse on what it is capable of.
Many thanks.[frame]