85 has the brake fluid level switch in the cap just like 86+.

The Bentley diagram for 85 mislabels the fluid level switch as the
parking brake switch with is shown right next to it but not labeled.

The switch it shows on track 77 is the fluid level float switch.

The unlabeled switch on track 76 is the parking brake switch.

I suspect the leds just above there are also mislabeled, reversed from
actual.

Mark

David Beierl wrote:
....................
>
>
> In '85, if you believe the schematic, the brake warning circuit does
> nothing at all; in '86 they shifted over to monitoring the brake
> fluid level and could have but didn't eliminate the fancy
> electronics. It wouldn't have killed them to do both, it seems to
> me, especially since they left the electronics in.
>
> It's been stated that at some point they shifted to a single pressure
> switch on the brake M/C -- the schematics don't reflect this, and
> doing it would mean that partial brake failure (front or rear
> circuit) would also eliminate the brake lights if the "wrong" circuit
> failed. Can someone confirm or deny? I admit I'm too lazy to pull
> my panel just to look.
>
> Yours,
> David
>
>