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Need Delco radio help..please!!

Discussion in 'Electronic Repair' started by Mr. Transistor, Apr 2, 2006.

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  1. I've googled this to death but thought I would give this one last try here.

    I have a 1996 S10 Blazer with Delco radio model #16169165. I can see that
    the previous owner must have installed a different stereo & then when they
    traded it in, replaced the Delco.

    I bought the car a month ago and its fine except the radio memory does not
    store any station setting or time. It has three plugs- black, blue, and
    white. An orange wire in the black plug supplies 12 volts while the key is
    in the ignition. There are no other voltages present in any plug with the
    key off.

    With those 3 plugs in the back of the radio there is still one open socket
    with 7 pins I believe. But there are no other loose cables anywhere to be
    found in the dash. Is the 12 volts necessary to keep the memory supposed to
    be through this plug?

    Unless someone has any ideas, my only hope is to apply 12 volts to each of
    those pins to see if the memory keeps without frying the radio.

    Someone suggested that the radio might have an internal battery, but I've
    taken the covers off and don't see anything resembling a battery.

    If you have any ideas please let me know!

    TIA, Steve
  2. JR North

    JR North Guest

    The empty socket may be for optional functions-like steering wheel
    switches for radio operation, etc. Do not attempt to power up those
    terminals. The memory power is probably missing on one of the other
    plugs. You should test (not just look at) the fuses in the fuse panel,
    and obtain a wiring diagram for the vehicle; possibly a partial one for
    the dash circuits. Find the missing KEY OFF supply and restore it.
  3. Ken Weitzel

    Ken Weitzel Guest

    Hi Steve...

    The orange wire should be powered continuously.

    Take care.

  4. Michael Ware

    Michael Ware Guest

    Yes, the orange is hot at all times.

    The empty socket is for bench testing, plugging it into a test jig. Don't
    touch it.

    Of the three plugs (black, blue, white) the black is for the power. ACC
    power on (yellow if I remember correctly), ground (black), orange (hot) and
    maybe pink if the car had a power antenna from the factory (no power antenna
    = no pink wire) The blue and white plugs are for the front and rear
    You say the orange has 12+ when the key is in the ignition. How about with
    the ignition off? If you are not getting power to the yellow wire with the
    ignition in the ACC and ON positions, you may have a blown radio fuse.
    Orange wire is fed off of the dome light fuse, powers dome light, cig
    lighter and radio memory, hot at all times.

    A common problem with GM cars was, when the electric cigarette lighter went
    bad, it takes out the fuse. No dome light, no radio memory.

    READ THIS! It is possible that when they installed the aftermarket radio,
    they cut off the factory plugs. When they decided to put it back, they may
    have miswired the plugs
    SO to summarize again:

    Orange = 12+ constant (batt)
    Yellow = 12+ switched
    Black = 12- (ground)
    Pink (optional, power antenna on)

  5. Edd Whatley

    Edd Whatley Guest

  6. Edd Whatley

    Edd Whatley Guest

  7. Guest

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