m42 fuse box different than M20??

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Tree18is
    R3VLimited
    • Mar 2004
    • 2703

    #1

    m42 fuse box different than M20??

    Fuse 21 is in question here.. car dies over night


    according to the ones I pulled up off Here.

    fuse 21 controls

    OBC
    fuel delievery
    radio mem
    glovebox light
    flashlight
    trunk lights
    fuel guage and Econ guage.

    I pulled every single one and during the "draw test" my test light stayed lit, and 8.5 volts where pulled. Im fucked so I might just but the dam thing on a switch..

  • twright
    Mod Crazy
    • Sep 2008
    • 705

    #2
    The easiest things to check: The glovebox light and the trunk light. Do these stay on when the doors are closed?

    Comment

    • kenika65
      E30 Fanatic
      • Aug 2007
      • 1336

      #3
      If you have a power probe it will help you find which wires are ground and which wires have a parasitic draw which is too small to light a test light.

      1986 325es (69k) Garage Queen Buy It Now 10k;1986 325es (track rat) 2.7i How-To & 1.1/1.3Motronic UpGrade
      1991 318is (daily driver) 1991 318is M42 Maintenance How-To;1989 325i (parts car)

      Comment

      • Tree18is
        R3VLimited
        • Mar 2004
        • 2703

        #4
        cool, ill get on it and see whats going on.

        Comment

        Working...