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

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.
JR

Mr. Transistor wrote:
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




--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth

"Ken Weitzel" wrote in message
news:TmWXf.212138$sa3.91988@pd7tw1no...


Mr. Transistor wrote:
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

Hi Steve...

The orange wire should be powered continuously.

Take care.

Ken


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
speakers.
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)

Mike

[quote=Michael Ware]"Ken Weitzel" wrote in message
news:TmWXf.212138$sa3.91988@pd7tw1no...


Mr. Transistor wrote:
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[color=blue]
taken the covers off and don't see anything resembling a battery.



If you have any ideas please let me know!



TIA, Steve

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


The only thing to add to and complement all of the previous comments is that if you are worried about applying 12VDC to a wire to test......merely do so thru a 470-to-1k 1/2 W carbon resistor as that wioll be adequate for the miniscule memory retention requirements.
I thought that I had online EBSCO Auto Repair info available , but the wiring diagram was not inclusive of the radio. Tomorrow I will check out All Data for
its wiring code colors to the radio.

73's de Edd

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[quote=Edd Whatley][quote=Michael Ware]"Ken Weitzel" wrote in message
news:TmWXf.212138$sa3.91988@pd7tw1no...


Mr. Transistor wrote:
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[color=blue]
taken the covers off and don't see anything resembling a battery.

If you have any ideas please let me know!

TIA, Steve

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


The only thing to add to and complement all of the previous comments is that if you are worried about applying 12VDC to a wire to test......merely do so thru a 470-to-1k 1/2 W carbon resistor as that wioll be adequate for the miniscule memory retention requirements.
I thought that I had online EBSCO Auto Repair info available , but the wiring diagram was not inclusive of the radio. Tomorrow I will check out All Data for
its wiring code colors to the radio.

73's de Edd

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The followinmg addenda added:

Here is what the ALL DATA manual says in reference to the wiring feeding to the radio proper:
---------------------------------------------------------------------------------------------------------------------------------------

DESCRIPTION AND OPERATION:

Voltage to the Radio is available at all times through the ORN (1140) wire. This
circuit provides voltage for Radio station memory storage. It also provides voltage
for the clock memory.

With the ignition switrch in ACC or RUN, voltage is supplied to the Radio through the
Radio Fuse and the YEL(43) wire. (Each speaker has its own pair of leads.)

The Radio Clock Display is at full intensity with the Ignition Switch in ACC
or RUN; voltage is supplied by the YEL (43) wire.

When the Park or Headlights are turned on, voltage is supplied to the RADIO through
the BRN (9) wire. When the Radio senses this signal, the radio switches voltage for the display from the Yel (43) to the GRY (8) wire. The display brightness is then controlled by the Panel and Interior Lamps Control Switch.

The Radio illumination bulb voltage is supplied by the GRY (8) wire.

-------------------------------------------------------------------------------------------------------------------------------------------
Looking at the radio proper and the power connections it looks like the following associated numbers are on that radio's power connector:

Pin 9.....Ignition power.....hot in ACC or RUN
Pin 10...Battery voltge ....hot at all times
Pin 6.....Display Dim Signal....hot if Light Switch is in Headlights or Park Position
Pin 7 or 8..Internal panel lamp in the Radio (Difference of 7-8 being dependent on radio version)
Pin 5....THE RADIO's GROUND WIRE.....Black with white tracer.

Usually pink is for power antenna but since this unit is not in the Caddie Escalade category
Its probably just as well in still using your recycled coat hanger / antenna......
By the top description , you can see that some internal power routing / switching comes into play in different situations.
That's all the info.....now go tear 'em up tiger!

73's de Edd

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Edd Whatley wrote:[color=blue]
Michael Ware Wrote:
"Ken Weitzel" wrote in message
news:TmWXf.212138$sa3.91988@pd7tw1no...


Mr. Transistor wrote:
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

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


The only thing to add to and complement all of the previous comments
is that if you are worried about applying 12VDC to a wire to
test......merely do so thru a 470-to-1k 1/2 W carbon resistor as that
wioll be adequate for the miniscule memory retention requirements.
I thought that I had online EBSCO Auto Repair info available , but the
wiring diagram was not inclusive of the radio. Tomorrow I will check
out All Data for
its wiring code colors to the radio.

73's de Edd

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


--
Edd Whatley

Edd Whatley wrote:[color=blue]
Michael Ware Wrote:
"Ken Weitzel" wrote in message
news:TmWXf.212138$sa3.91988@pd7tw1no...


Mr. Transistor wrote:
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

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


The only thing to add to and complement all of the previous comments
is that if you are worried about applying 12VDC to a wire to
test......merely do so thru a 470-to-1k 1/2 W carbon resistor as that
wioll be adequate for the miniscule memory retention requirements.
I thought that I had online EBSCO Auto Repair info available , but the
wiring diagram was not inclusive of the radio. Tomorrow I will check
out All Data for
its wiring code colors to the radio.

73's de Edd

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


--
Edd Whatley



http://carstereohelp.net/wireharness_Delco1.htm
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