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I have to reset all my settings each time I start my car. Whick wire keeps memory?

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It should be a yellow wire. it needs to go to a constant power source (stays hot when key is turned off).

Posted on Aug 19, 2010

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Sounds like an after market alarm. If so, take it out or replace it. When I get cars like yours or won't start. If I see an aftermarket system, I tell customers that I won't work on them till this is out of the cars system. 99% of the time, The car works.

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I just put a new stereo in my truck but wont keep memory?


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Hello there and welcome to fixya
If this vehical has a fuel cut off switch whick most modern day vehicals have it may have been set off by the shock of the pot hole so i would first check your users manual to see if you have one and if so check on how to reset it if this checks out ok then check the all of the fuses to ensure that you didnt blow a fuse this is very common ok then check all of the wiring going from the battery to the started to see if any of them are loose and the ground from the battery ok.
Please keep me posted on how this is going so i can continue to help
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I don't think you have the memory keep alive wire attached to a constant 12V+ source. This is why it is not keeping set stations and reverting back to demo more every time it is switched on. Usually the memory keep alive wire is yellow.

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1 Answer

My deck keeps on resetting every time I turn on my car


its not wired correctly,the yellow wire is the all time 12 volts wire,it must always have 12 volts to hold the memory like the clock etc.take the yellow wire and hook it up straight to the battery and then see if it holds the settings,if that fixes it you can leave it on the battery ,it wont hurt anything,most likely somebody wired it with the red and yellow tied together,not right,it wont hurt the radio but it wont keep the settings,good luck,give me 4 thumbs up if it fixes your problem,thanks

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check to make sure you don't have the batt+ wire and switched 12v wire mixed up. batt+ is usually yellow or orange while the switched 12v wire is usually red, consult the manual or look on the unit itself. there should be a wire color description there. batt+ is what you want 12v running to all the time to keep the settings. switched 12v is the one that turns the unit on when the key is turned on. the unit will still operate if the 2 are backwards but like you said it will clear the memory every time you shut it off because your cutting power to the batt+ wire thus resetting the unit.

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1 Answer

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Either you blew the memory fuse or didn't connect the radio to the proper wire. Check fuses inside and under the hood.

The memory wire to the radio needs 12v all the time. If it's not connected or no power at the lead the radio will reset every time you turn off the car.

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