how to disable the radio alarm system when repair my car?

  • Thread starter Thread starter Trident9440
  • Start date Start date
T

Trident9440

Hi,there
I want to replace the window regulator of my honda accord. I read the user
manual and it says I should disable the alarm system first. The car I bought
is a used one so it does not provide me the init code for the radio system.
Does there anyone know how to disable the alarm system? Can I simplely
disconnect the radio from the battery?

Thanks?
Trident
 
I am not sure what you are talking about. Some people suggest hooking
a 9 volt transistor Battery accross the Car Battery terminals before
you disconnect the car battery. It is cuppose to give enough juice to
keep the presets in the radio from erasing. It may work with the anti
theft codes also.
 
I am not sure what you are talking about. Some people suggest hooking
a 9 volt transistor Battery accross the Car Battery terminals before
you disconnect the car battery. It is cuppose to give enough juice to
keep the presets in the radio from erasing. It may work with the anti
theft codes also.
 
I am not sure what you are talking about. Some people suggest hooking
a 9 volt transistor Battery accross the Car Battery terminals before
you disconnect the car battery. It is cuppose to give enough juice to
keep the presets in the radio from erasing. It may work with the anti
theft codes also.
Click to expand...

don't unhook anything to replace a window regulator. justa leave the key off.
Chip
 
I am not sure what you are talking about. Some people suggest hooking
a 9 volt transistor Battery accross the Car Battery terminals before
you disconnect the car battery. It is cuppose to give enough juice to
keep the presets in the radio from erasing. It may work with the anti
theft codes also.
Click to expand...

don't unhook anything to replace a window regulator. justa leave the key off.
Chip
 
Tjacobs said:
I am not sure what you are talking about. Some people suggest hooking
a 9 volt transistor Battery accross the Car Battery terminals before
you disconnect the car battery. It is cuppose to give enough juice to
keep the presets in the radio from erasing. It may work with the anti
theft codes also.
Click to expand...

That might be an interesting exercise. Hooking a 9v dry cell across a
300Amp-capable 12v car battery ought to be a really bad thing.

I've never heard of that trick, but if anything, I would think you would
disconnect the car battery, and connect the 9v battery within X seconds.

I would never connect two dissimilar voltage batteries.
 
Tjacobs said:
I am not sure what you are talking about. Some people suggest hooking
a 9 volt transistor Battery accross the Car Battery terminals before
you disconnect the car battery. It is cuppose to give enough juice to
keep the presets in the radio from erasing. It may work with the anti
theft codes also.
Click to expand...

That might be an interesting exercise. Hooking a 9v dry cell across a
300Amp-capable 12v car battery ought to be a really bad thing.

I've never heard of that trick, but if anything, I would think you would
disconnect the car battery, and connect the 9v battery within X seconds.

I would never connect two dissimilar voltage batteries.
 
That might be an interesting exercise. Hooking a 9v dry cell across a
300Amp-capable 12v car battery ought to be a really bad thing.

I've never heard of that trick, but if anything, I would think you would
disconnect the car battery, and connect the 9v battery within X seconds.

I would never connect two dissimilar voltage batteries.
Click to expand...

I believe that you may have misunderstood what the respondent was referring
to. Connecting a 9v transistor battery to save the radio and clock settings
is actually a common practice although in a slightly different manner from
what was described. Most folks use an adapter that plugs into the cigarette
lighter socket, e.g., http://tinyurl.com/yctf. The only issue with this is
that you have to be careful not to turn on any accessories while working on
the car as the small 9v battery will not hold up under the load and the
radio settings will be lost.

Eric
 
That might be an interesting exercise. Hooking a 9v dry cell across a
300Amp-capable 12v car battery ought to be a really bad thing.

I've never heard of that trick, but if anything, I would think you would
disconnect the car battery, and connect the 9v battery within X seconds.

I would never connect two dissimilar voltage batteries.
Click to expand...

I believe that you may have misunderstood what the respondent was referring
to. Connecting a 9v transistor battery to save the radio and clock settings
is actually a common practice although in a slightly different manner from
what was described. Most folks use an adapter that plugs into the cigarette
lighter socket, e.g., http://tinyurl.com/yctf. The only issue with this is
that you have to be careful not to turn on any accessories while working on
the car as the small 9v battery will not hold up under the load and the
radio settings will be lost.

Eric
 
what was described. Most folks use an adapter that plugs into the cigarette
lighter socket, e.g., http://tinyurl.com/yctf. The only issue with this is
Click to expand...

The gadget has some circuitry inside. That I can believe, and I think I
have seen mention of that before. That is a far cry from "across the car
battery terminals", which could be either a disaster, or at least lead to a
very hot battery in very short order.
 
what was described. Most folks use an adapter that plugs into the cigarette
lighter socket, e.g., http://tinyurl.com/yctf. The only issue with this is
Click to expand...

The gadget has some circuitry inside. That I can believe, and I think I
have seen mention of that before. That is a far cry from "across the car
battery terminals", which could be either a disaster, or at least lead to a
very hot battery in very short order.
 
<dold@
Eric
is

The gadget has some circuitry inside. That I can believe, and I think I
have seen mention of that before. That is a far cry from "across the car
battery terminals", which could be either a disaster, or at least lead to a
very hot battery in very short order.
Click to expand...

What about a short while removing the alternator?
 
<dold@
Eric
is

The gadget has some circuitry inside. That I can believe, and I think I
have seen mention of that before. That is a far cry from "across the car
battery terminals", which could be either a disaster, or at least lead to a
very hot battery in very short order.
Click to expand...

What about a short while removing the alternator?
 
Indian Summer
<dold
Eh? What's the question?
Click to expand...

Ever tried removing an alternator?. In such tight a space, you
will need a plastic wrench to do the work to avoid a short. A short would
send the gadget to zero volts.
 
Indian Summer
<dold
Eh? What's the question?
Click to expand...

Ever tried removing an alternator?. In such tight a space, you
will need a plastic wrench to do the work to avoid a short. A short would
send the gadget to zero volts.
 
Indian Summer said:
Ever tried removing an alternator?. In such tight a space, you
will need a plastic wrench to do the work to avoid a short. A short would
send the gadget to zero volts.
Click to expand...

The high-current battery is already disconnected when you start
removing the alternator. The gadget provides only a few milliamps,
current limited. If you touch your wrench against the exhaust manifold
you might momentarily pull the voltage at that point to zero, but draw
no more than a few milliamps from the gadget. The radio can probably
withstand an outage of several seconds.

The excitement of shorting out an alternator with your wrench isn't from
the volts, it's from the amount of current available. The low current
from the gadget might not even break through the insulating properties
of the rust on the exhaust manifold and the grease on your wrench.
(Is rust a conductor?)
 
Indian Summer said:
Ever tried removing an alternator?. In such tight a space, you
will need a plastic wrench to do the work to avoid a short. A short would
send the gadget to zero volts.
Click to expand...

The high-current battery is already disconnected when you start
removing the alternator. The gadget provides only a few milliamps,
current limited. If you touch your wrench against the exhaust manifold
you might momentarily pull the voltage at that point to zero, but draw
no more than a few milliamps from the gadget. The radio can probably
withstand an outage of several seconds.

The excitement of shorting out an alternator with your wrench isn't from
the volts, it's from the amount of current available. The low current
from the gadget might not even break through the insulating properties
of the rust on the exhaust manifold and the grease on your wrench.
(Is rust a conductor?)
 
The gadget has some circuitry inside. That I can believe, and I think I
Click to expand...

It would just require a single diode to keep the car battery from being
able to try charging the 9V battery. Otherwise, the arrangement might
fail in a spectacular fashion of some sort.
 
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