At 02:25 PM 3/23/2001, Dave Baker wrote:
>According to my Haynes manual, the output of the brake light switch connects
>to a point on the voltage regulator (C1 in the Haynes book).   C1 is in turn
>jumpered to a point labeled E16, which is not identified in the manual.

ATB (according to Bentley) the '85 has two brake light switches, one for
each hydraulic circuit and outputs in parallel.  Circuit goes:

Fuse S8, 1mm r/y to brake switches.  From switches, 1 mm r/bk to terminal
T4a (probably a 4-position connector behind dash), then bk/r to pin three
of T7 in connector box.  Thence bk/r to left light and from there to right
light.  Each light is grounded to its respective taillight ground, and both
taillight grounds go to ground point 19, near the ignition coil.

Suggest you unplug brake light switches, jumper and measure as indicated.

david

David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"