4kq- wires to the speedometer?

[Huw Powell]

> I've been trying to locate a strange clicking noise in the instrument
> cluster of my '86 4kq.  I've eliminated everything except the gauge
> cluster itself.  I've notice a couple of wires on a 2-pin plug at the
> back of the speedo.  One wire is white w/ blue stripe, and the other
> is brown (ground?).  I haven't followed them to see where they go
> into the dash.  The weird thing is that Bentley has no such wires in
> the schematic.  Does anybody know what these wires do?  Inside the
> speedo is small coil (electromagnet?) next to the rotating hub.  What
> the heck is that all about?

That is the inductive pickup for the cruise control (it's how the cc 
knows how fast you are going)

If you check the cruise control section of the Bentley schematic 
(usuaully a separate diagram in later model Bentleys) you should see it.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/