Volvo RWD 700 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2017 700 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Feasibility of bypassing instrument light rheostat module? 700 1988

posted by  Huntlea on  Wed Apr 2 15:12 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

The expense of a rheostat module(salvage purchase includes entire instrument assembly) lead to a suggested bypass of a failed module to a fixed full brightness display. I hesitate because the module circuit board has a lot of electronic commponents in both the bulb and the ground circuits and is not a simple rheostat. Obviously, I don't want to fry the instrument circuits. Anyone have any such experience with such a bypass or an understanding of what all those resistors, capacitors, transistors, etc. actually are used for?








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Feasibility of bypassing instrument light rheostat module? 700 1988

    posted by  Alcarguy on  Thu Apr 3 08:16 CST 2003
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Aug 10 18:25 CST 2007
    [RELATED]

    I bypassed the rheostat in my 1987 240 about eight years ago and never had a problem. The dash lights are always full bright.I used a short piece of 14 gauge wire, with 1/4 inch male spade connectors. Connect them right in line with the wiring where the rheostat goes.








    •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

      Feasibility of bypassing instrument light rheostat module? 700 1988

      posted by  Huntlea on  Thu Apr 3 13:39 CST 2003
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

      Thanks for the reassurance, but did your 240 have the module with its considerable electronics that was powered by the rheostat and fed to the instrument lights? The actual rheostat is soldered on this circuit board contained in an L-shaped plastic enclosure approximately half the size of a cigarettte package. It has the red, blue, and black leads. Thanks again.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.