Question about Lanzar SD75MU 7 TFT Touch Screen DVD/VCD/CD/MP3/CD-R/USB/AM/FM/RDS R

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Cant keep memory when i turn car off

Need wiring diagram

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1 Answer

Memory wire for the head unit


Check the fuse for the radio, the one for the keep alive memory is blown or the radio is defective.

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I have replaced the engine in a 1983 chevy camaro and I need a wireing diagram to get everything working properly.


Cant send wiring diagrams to you because of copy write laws but you can go to public library & they have proffessional chiltons/electrical diagrams in the referance section & you will find what you need their.ps if they dont have the diagrams the library will send them to you for a very smaall fee if any.Keep posting if you have any more problems

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see wiring diagrams at autozone.com. follow the instuctions to register your car, then select repair guides

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Cant figure out what all the wires go to


Most car stereos have wiring for power, ground, speakers and amps/accessories, if you do not have an amp or fewer speakers you will not use all the wires, look in your manual or look on line for a wiring diagram to see what all the wires go to. Your main wires will be main power (usually Red) Back up power (for memory usually orange or yellow) a ground wire (usually Black) and speaker wires.

Aug 21, 2009 | Kenwood Car Audio & Video

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Raideo station wont stay where I put it when I turn truck back on even after programing it


Check the wiring diagram for that radio and you will probably find that the wire that is disconnected is the memory wire. the memory wire keeps the memory chip activated when the power to the radio is off so your settings are retained.

May 27, 2009 | Audiovox AV-954

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Dont know which wires are which just need colored wiring diagram


red is hot yellow is memory black is ground -tricky part is without knowing what brand of head unit you have i cant really say what anything else is-so just for kicks lets say you have a pioneer there should be 4 sets of different colored wire pairs grey white green and purple those are your speaker leads white and grey are the front speakers green and purple are the rear speakers-blue is to turn on an amp with orange is usually connected to the lights to dim the unit at night and thats about all i know

May 09, 2009 | Car Audio & Video

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Head unit wiring diagram


Radio batt positive[F1](hot at all times) is the orange wire, Radio Ignition positive[F2](hot with key on) is the Dark Green wire, Ground is black wire[E16]. A test light would make it easy to verify each wire. If you need any more assistance let me know.

Dec 23, 2008 | 1998 Chevrolet Blazer

2 Answers

Wont keep memory


Most stereo manufacturers agreed on a color-coding scheme for their wiring to keep things consistent. In that scheme, red wires are run to power (ie, the battery) and serve as the ignition-switched power leads (so when the engine is shut off, the head unit also shuts off), black wires are grounds, and purple, gray, green, and white are used for the main four speakers. Blue is an antenna and/or amplifier turn-on wire. Orange is a dimmer wire (for cars with dimmers on the dash lights, this can be tapped in to also dim the head unit's lighting). Yellow wires are typically the memory wires. These feed power to the head unit constantly, regardless of whether the car is on or not, so that memory presets and tone settings are maintained. Your JVC unit should have a yellow wire coming off the back as part of the harness - this would be the one to supply power. You can run this directly to the battery - that way if you blow the fuse in the fuse box that you're considering using, you won't lose your stereo settings as well as whatever feature the fuse was utilized to protect.

Jul 20, 2008 | JVC KD-G320 CD Player

1 Answer

Pioneer DEH-P6500R


It's because the second power wire needs a constant hot feed. The yellow wire from the wire clip in the back of the stereo is your constant, so you need to find a powered wire coming from the bundle of wires in your dash that will produce electricity both while the car is on and while the car is off. Use a simple ground/light current tester to find the wire in the dash or go buy a Haynes Manual for your car and consult the wire diagrams in the book. Once you get that constant current hooked up, your radio will save its memory when you turn off the car. Good luck.

May 13, 2008 | Pioneer DEH-P6500 CD Player

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