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Changing the Stereo

Does the factory stereo have ''memory''? Does it help run other electrical devices in the truck?

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The factory radio does have memory which stores the radio stations that you have programmed into it. but this is only done because it is connected directly to the vehicles battery. As for it running other devices on the truck. This all depends on the model. if it was connected along with a cd changer or sat nav or cb radio. Then yes by disconnecting it you could stop these devices from working. Worst case scenario you disconnect it. Something else stops working. you reconnect it and you need a code to unlock it. if it was me i'd give it a go. Especially if you have the code.

Posted on May 15, 2009

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1 Answer

Trying to hook up aftermarket stereo with no factory harness. How can I go about wiring my new stereo wires or my replacement harness (with module) to my car's already existing loose stereo wiring??


Hi Daniel

You need to test & label all the loose wires.

Use a multimeter in Ohms mode to place a tickle of electricity to each speaker wire. you should hear each speaker crackle. (Multimeters only use a 9v battery internally)
Label each pair of wires for speakers.
Their color coding may help. Keep the negative & positive wires to the speakers correct so that the speakers all travel in a forward motion together or you will have distortion from one speaker that is out of phase with the others.
You will also have a permanent +12v line and a Ignition Key +12 volt line.
One keeps the station memory etc when the ignition key is off.

Cheers

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97 jeep grand Cherokee, tried replacing factory stereo with aftermarket stereo, at first the stereo turned on but no sound came out of the speakers, tried to fix the problem but now the stereo does not...


You have 2 fuses on the radio. There are also two fuses in the fuse panel one would be marked ignition and the other one memory or lighter clock combination. Please check these first

A thumbs up would be greatly appreciated if answer is helpful for your question. THANK you and GOD BLESS

Nov 22, 2014 | Cars & Trucks

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Just had the factory stereo taken out and an aftermarket one put in, had a buddy do it and he cut the factory wiring harness off that's runs into the factory stereo. Is there any possible fix?


Hey, you would be better off to look for your yr/make/model car at a scrap yard and get them to cut plug off with longer wires, then require them together, had to do it with my truck. Hope this helps

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I have a toyota trueno 1992 and i want to put a new stereo in it


Go to the auto parts store and get a wire adaptor made for a 1992 trueno. It will plug into your factory harness. The wire colors are prematched to your sony and other aftermarket stereos. Just match the wire colors, splice with connectors making sure no wires are exposed. (A little electrical tape for good measure around splices helps). Then it just plugs in. If your factory stereo has mounts that screw onto the radio, unscrew them and attach them to the sony. Remove sleeve from radio and discard. The screw holes are already on the sony.

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I hooked up a JVC stero in my 1991 Nissan truck. Now the memory is wiped out for the radio + factory clock when I turn off the car. The radio will come back on, but no presets works.


Chances are that you do not have the constant 12 volt power of the vehicle connected to the memory wire of the stereo. The yellow memory wire of the stereo should be connected to the vehicles' battery. The red accessory wire of the stereo should connected to a switched 12 volt power source.

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What is the color code for the radio ? we are changing the radio and need the wire codeing for the factory radio


For 2001 Buick Century Car Radio Stereo Audio Wiring Diagram...

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue


Hope helps (remember to rate this answer).

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you can buy,well we can,adaptor plugs to connect to the h/unit and to the wiring loom plug.normally its yellow=constant power 12v +,red=ignition feed 12v+,[some are other way round]black=earth,blue=power antennae,grey/greyblack,RF speaker,white/whiteblack,LH speaker,Purple/purple black,RR speaker andgreen/green black LR,,orange =illumination dash lights.Those are our standard colour codings,we get in New Zealand.

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Stereo wont hold memory


Look for a second power wire that needs to be hooked up. There is one wire that is switched (runs from the ignition) and another that is direct from the battery. You can test for this with a light or a meter. Typically the always hot wire will include an in-line fuse to prevent fires in the event of a short... Hope this helps...;-)

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