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X10 sc21a camera wiring, which is video, audio, ground, and power? also is this a 12v or 9v camera?

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Website SC23A X10Wiki

Posted on Dec 13, 2016


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I need a schematic for a LT2 echo board to install in my president grant PC-409AB

break audio line. J2 input goes to mic pin J1output to radio.
(leave the shielded ground wires disconnected. on audio)
Power use a 1k ohm resistor from 12v dc on pwr switch.
Ground run the ground wire to board ground
test and set echo level.
this will work for any radio. if the echo needs 12v instead of 8v remove the 1k resistor and just use a 1n4001 diode on the power wires . some models require 12v some are 5-8volts.

Jan 18, 2015 | Radio Communications

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Does anyone know what to do with white wire on the back of boss audio system 7948B? it says camera 12v

IF you are not using the dedicated power connection for the camera, just tape it off and tuck it out of the way. As for the camera not working, have you confirmed that it is getting power through the backup light tap?

Dec 01, 2014 | Boss Audio Systems BV 7948B - DVD receiver...

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Security camera wiring diagram

use 3+1 wire in that wire there is one co-axial cable middle one is video , outer one is ground , red is +12 v and blue connect to ground
camera----------------yellow-----video------------middle wire of 3+1 cable
camera----------------blue---------voltage----------- 12v dc +
camera----------------black--------ground------------ground of supply


Oct 05, 2013 | Dome 4 CCD CCTV Camera Surveillance...

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Have a samsung ssc 17c need the wire digram

White wire with bare copper wire around it is for video. Center wire is positive, copper bare wire is ground. Red is +12v dc, Black is -12v dc, Green is audio +, while yellow is audio -.

Feb 01, 2013 | Home Security

1 Answer

I have a pioneer avh-p2300dvd in my car and i hooked up the parking break input to +12 volts because i want to be able to watch dvd's while driving(for my son in passenger seat) now my screen is stuck...

The parking brake (light green) connection needs to be connected to a (-) ground (black) wire, not a +12V wire. While it won't damage the unit to put +12V power to that wire, it does need to see a (-) chassis ground to view video while in motion. If changing this wire to ground still doesn't offer the solution, your Pioneer may require wiring of a relay as is necessary on several newer Pioneer navigation units.
Some Pioneer radios will still not allow video to be viewed even if the parking brake wire is grounded. For these units, I recommend using a standard 12V automotive relay (Bosch type). I would recommend consulting a professional installer if you are unsure about wiring this relay. Otherwise, if you are comfortable/knowledgeable, the instructions for wiring the relay are as follows:
85 - chassis ground86 - Blue/white stripe (remote turn-on lead from Pioneer)87 - chassis ground30 - Light green (parking brake lead of Pioneer)
The wiring of the relay will cause the parking brake lead to see the ground wire at the same time that the Pioneer actually powers up. This delay can be necessary for viewing video. An optional timing device can be wired in to do the same function such as PAC electronics' PTR-7.
The message that you are receiving for "screen image may appear reversed" is typically only visible when a reverse camera is used. For this, the Pioneer has a separate purple/white stripe wire for +12V reverse input.
I hope that this information was helpful.- Elliot

Nov 09, 2011 | Car Audio & Video

2 Answers

My in car unit is in protect mode, and even though I have unconnected all wiring exect power and gound and reset it, it won't rteset.

At some point the 12V system was disconnected and now the radio thinks it has been stolen. If it is a factory-installed unit, the (vehicle) dealer can get the code for you - for a price. To prevent that from happening (again) you can buy a simple (cheap) device that uses a 9V battery plugged into the cigarette lighter, This will keep code-protected items from losing their minds.

Apr 17, 2011 | Kenwood Car Audio & Video

1 Answer

I need the wiring diagram of the stereo cassette radio am/fm, please help my radio is dead (positive and speakers terminals)

You're going to need a multimeter/voltmeter and a 9v battery to do this. It's easiest to first find your constant and switched/ignition wires.

For the constant, you can get ground from any piece of metal inside the dash, and begin touching all the wires, one at a time until you get a voltage. The meter should show 12v or just under. This is your constant. Do the same for the ignition/switched, but this time with the ignition on. Check the remaining wires until you get one at 12v or just under. To check now turn off ignition and the voltage should go away.

For the speakers, it's a little more guessing, but you can check them with a 9v battery. Start with any of the remaining wires and hold it on the positive terminal of your 9v battery. Now go through the remaining wires and touch them, one at a time, to the negative terminal. You should hear a pop from the speaker when you come across the pair. Note the colors and the speaker where it came from. Now move on to another wire and repeat.

You may come across a wire that will not pop when paired with any of the other wires. This could be your ground. Put it a side until you've figured out all the speaker wires. Now go back to the possible ground and use your multimeter to see if you get 12v with your constant wire on positive and the negative wire on the possible ground. If it does it's your ground. If not, it could be something like a dimmer, power antenna or remote line that isn't necessary in replacing a stereo.

The downfall of doing this is that it doesn't tell you polarity. After you finishing connecting the radio to the in-dash wiring turn it on. Listen to the sound carefully. If it sounds tinny one or more of the speakers polarity are incorrect. Try to determine which speaker/s sound tinny and reverse there wiring. Check again and hopefully everything's sounding good.

I hope this is helpful.


Mar 03, 2011 | Scosche Industries Scosche MN1377B 199902...

1 Answer

I need a fuse diagram for 2001 Nissan Pathfinder

Do you want to install a new unit or wht ? u may use this reference to work upon ....
Get yourself a digital multimeter. Find the +12V constant, 12V remote, and ground. Connect them to the new head unit. For speaker wire get yourself a 9V toy battery and listen to poping noise. If you have a factory amp you need to power up the factory amp. Use the wiring diagram below to serve as a guide. Test your wire first before connecting them.

P o w e r
Memory (+12v Constant) Red
Ignition (+12v Switched) (varies) Brown or Green
Ground (-) Black (varies - most don't have one)
Illumination Red/White
Dimmer Red/Black
Power Antenna Green
S p e a k e r s
Right Front (+) Brown
Right Front (-) Brown/White
Left Front (+) Black
Left Front (-) Black/White
Right Rear (+) Blue
Right Rear (-) Pink
Left Rear (+) Red
Left Rear (-) Green

Feb 04, 2010 | 2001 Nissan Pathfinder

1 Answer

Sombody rewired the car with new wires and cut the wires to take out the head unit wen they got rid of the car which is a 1990 geo storm and now i dont know wat wires are the ones i need so i could hook up...

Get a 9v battery and test the speakers, they will sound like rattle whe you connect the batt to the cables, identify them, ON the car, red is 12v acc, yellow is 12v all the time, black is ground and theres is one for the lighting.

Jul 08, 2009 | American International Gwh 416 Wire...

1 Answer

Power pack creates 'hummmm' in wireless headphones.

I don't think the 12V power pack is the problem. Generally there would be a regulator on the plug pack input to the transmitter (as power packs are notoriously bad at voltage regulation).

My guess is it an 'earth leak' between the TV and the transmitter via the audio lead. Does the powerpack have a earth pin. If so, are you able to plug it into an non-earthed power outlet.

If this isn't possible try removing the ground connection from the audio lead.

It could also be a bad audio lead.

Is the TV mono and the transmitter stereo or visa versa? You may need a mono to stereo lead.

Hopefully something in here will help.

Mar 17, 2009 | Electronics - Others

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