Wire Color codes -Green Books - 89-780

Discussion in 'Volvo 780' started by AJ, Jan 18, 2004.

  1. AJ

    AJ Guest

    I have the Green Book, 780 1989 Wiring Diagrams.

    What a wonderful book. Thanks Guys!

    Most of the codes are clear. But some are not, to me.
    There are some I do not know.

    What is SB, W-SB, T-SB, GN, GR,?

    I asume that BL is black, Y is yellow, GN-R maybe green w/red strip.

    Anyway, my battery goes dead after being parked for a few days.
    I assume that I have a high resistance short to ground.

    Time for me to learn every wire. They are all in very good condition.
    As is the whole car.
    I think I will put in a new sound system, this winter.

    Regards to you all!

    AJ, Jan 18, 2004
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  2. AJ

    brackenburn Guest

    Hi "AJ",

    Re the Volvo wiring colour codes:

    BL = Blue R = Red
    BN = Brown SB = Black
    GN = Green VO = Violet
    GR = Grey W = White
    OR = Orange Y = Yellow
    P = Pink

    True for the 240 series up to 1986, but I'm pretty sure it will work for
    your '89 780.

    Good Luck.
    Andy I.
    brackenburn, Jan 19, 2004
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  3. AJ

    Rob Guenther Guest

    Well a short to ground can only be one thing - incredibly low resistance.
    Everything else is a resistive load... You could have a low resistance
    resistive load between positive and negative (chassis ground). This is the
    most likely cause of the battery drain, something drawing too much current.

    ..... Sorry, but I just had to correct you, being an electrician and all.
    People use the term "short circuit" for everything, a real short circuit
    would leave you without power in fractions of a second, and massive sparks
    would be seen.
    Rob Guenther, Jan 19, 2004
  4. AJ

    steve sedlis Guest

    another thought - check the door switches and courtesy lights. I had a bad
    door switch that caused my courtesy lights to stay on after the doors were
    closed - result, dead battery in a matter of hours. If in doubt, pull the


    93 volvo 850GLT 202000 miles
    steve sedlis, Jan 19, 2004
  5. AJ

    AJ Guest

    Thanks everyone!

    I removed the radio/equallize.
    That may have been where my problem was.
    We will see. I do not drive it much in the winter.
    Just play with it. This year I will put in a new sound system.
    One of the POs had a changer put in at best buy and they really messed
    up the wiring.

    AJ @ Home in Wisconsin
    1989 - 765 w/134k Miles
    1989 - 780T w/143k Miles
    1987 - 245 w/225k Sold
    AJ, Jan 20, 2004
  6. AJ


    Apr 21, 2015
    Likes Received:
    Glove compartment light!
    arp, Apr 21, 2015
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