96 850 dome light switch, shift indicator lamp, visor

Discussion in 'Volvo 850' started by Pat Quadlander, Jul 26, 2005.

  1. Just purchased a low mileage 1996 850 GLT. Pretty good condition with a few
    items needing attention:

    1. Dome light rocker switch (middle switch) missing. Dome lights do not
    come on, but lamps are good. Tried depressing the left and right switches
    on and off. Lamps don't come on when any doors are open. Nada. The
    footwell lamps and the warning lamps along the open door edge come on as
    expected when door is open. I tried to jumper the dome light rocker
    contacts that are actuated by the rocker switch, and blew the fuse. I
    pulled a rocker switch at my local pick-n-pull and installed, and blew the
    fuse (after I had replaced it with a new one). Is the short/broken circuit
    likely in the dome light assembly (in the complex switch buried on the back
    side of the dome lights fixture), or more likely along the wires leading
    from source to the dome light assembly? Is this a common problem with a
    common inexpensive do-it-yourself fix?

    2. Shift indicator bulb is dead, and/or not receiving juice from source when
    night lights are on. Haynes manual describes steps to reach the lamp OK,
    and refers to the bulb module that has to be replaced as an assembly. I.e.,
    can't replace just the bulb alone. Is access to the bulb module assembly as
    simple as haynes describes? Is the bulb module assembly a dealer only part?

    3. Driver's sun visor sags (rotates down on the plastic shaft that fastens
    the visor to ceiling, so visor hangs down all the time instead of horizontal
    flush with the ceiling). Since the shaft that the visor rotates on is also
    the wiring conduit leading to the makeup vanity lamps, replacing the visor
    will involve disconnecting or cutting the wiring, then reconnecting or
    splicing the wiring with the new visor. Is there a convenient disconnect
    point, or is cutting then splicing the only way to go? Or, is there a
    reliable way to firm up the plastic shaft that holds the visor frame firm?

    I've done most of my own maint on a few 240s, 122 and 1800E. However, the
    more modern 850 intimidates me a little just yet, and I'll never understand
    electricity, so I'm nervous about wiring, switches, shorts, and circuit
    breaks. I worked on d-jet with fingers crossed inside rubber gloves :).

    Thanks for any help,

    Pat Quadlander, Jul 26, 2005
  2. Pat Quadlander

    Mike F Guest

    1. The problem is most likely in the dome light itself. I'd bet that's
    why it's busted.

    2. The "bulb module" is simply the bulb attached to a 10 cent bulb
    holder. For that the dealer charges 10 bucks, but they are available
    through some of the internet parts places.

    3. The wiring from the visor runs all the way down the "A" pillar
    before there's a connector. So you have to disconnect it under the
    dashboard, so most folks just cut and splice up in the roof.

    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Jul 26, 2005
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