for anyone else who's got the same/similar problems:
96.02.28
For Technical Service Bulletins related to safety items,
  NHTSA Technical Reference Library
  400 7th Street SW
  Washington, DC 20950
  (202) 366-2768

a commercial source for TSB's is
  Alldata Corporation
  (800) 829-8727, ext. 3052

  Affected    Model   Order     Affected
   Model      Years   Number    Component        Subject
------------ ------- --------  ----------- -----------------------------
Vanagon      ALL     90-90-02   Electrical Instrument Indicator Lights
                                System     Malfunction

ALL          ALL     90-92-03   Electrical Coolant Indicator LED is
Water-Cooled                    System     Flashing at Normal
                                           Temperatures

ALL          ALL     90-87-03   Electrical Coolant Temperature Gauge
Water-Cooled                    System     Light flashes intermittently
                                           / continuously
------------------------------------------------------------------------
Technical Bulletin
Group:     90
Number:    90-02