That should be the only power connections that are required for the unit to power up. If you have power really the only thing it could be is either a fuse if there is one on the head unit itself (I think that has a 10 amp) or inline or you have a faulty unit. Most or all of the in-dash screen type head units have a wire that has to be connected to the parking brake but that is usually only to prevent watching the screen while driving. So it shouldn't be that but might be something to check. Hope that helps you out.
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depending on who did the install . if it was a shop take it back should have a warranty. If he owner who posted the question install clarion radio here are some ideas that need to be checked out to determine what is the problem...
1. did the installer fry the radio during install 2. you must have a good ground and (12.0 volts to 13.5 volts on the red ignition switched wire only when the ignition is on or cars running) and (12.0 volts to 13.5 volt on the yellow wire which is constant power wire at all times.. even when the cars not running this is what keep all the station save and clock working with correct time)
A. buy a digital volt meter then remove radio from dash and check the for power with out damaging any harness or wires.
what you are going to do now is unplug the wire harness from the back of the radio to use this to check for power and grounds that will make the radio work...
1. turn on the car or truck set your voltmeter to dc voltage take the wire harness for the radio and find the black wire going into it and then (take the black test lead from the volt meter and slide it into the spot on the back of the wire harness where the black wire is make sure the metal tip of the test lead is all the way in and it is making contact to the metal pin to get a reading) the black wire at harness is the ground wire
take the red test lead from the meter and do the same thing but this time your going to find the red wire on the harness . which the red wire is the ignition switched wire which is controled by the cars ignition switch
once these to test leads are touching both the red and the black you should get a reading on the meter like 12.0 volts to 13.5 volts remember what your reading is cause at this point you need to check one other power wire to determine that problem here . now turn off cars ignition.
There is a yellow wire that is call constant power in the radio harness turn off the car at this point and move the red test lead to the yellow wire on the radio harness. now look at the volt meter to see if you are getting a reading like 12.0 volts to 13.5 volts
if nothing here either here are some things to check
1 ignition is not in proper postion to power up radio harness 2 test lead from volt meter not making contact to metal pins on wires in the harness ( must touch metal pin not the casing of the wire to get a reading) 3. blown radio fuse in the fuse panel of car or truck or suv 4. no ground for radio ..(with out a ground radio power circuit is not complete)
how to check to see if radio ground is good A. find a pice of metal in the car that is attached to the frame of the car sometimes you might find that there is something behind the radio or the antenna casing will work because the way the antenna grounded. B. now retest the red (ignition switched wire ) and the yellow (constant power wire) again using the new ground location take the black test lead and touch what you think is another good ground.. now take the red test lead and touch it to the yellow wire on the radio harness make sure it far enough up into the back of the harness to make contact with the metal pin at end of wire with out damaging anything. C if you have found a good ground you get a reading,,, just like i told you before..12 volts to13.5 volts this mean getting power
D. now check the red (ignition switched wire again ) using the new ground location . don't for get this time you must turn on the ignition switch to power up this wire and when done turn off ignition switch.
if you find that you have power now by using the new grounding location change the radio harness ground wire to this location..
if you still have no power check all fuses in the car one of them may be blown ..
if you feel after reading this that you don't think you can do this simple task look for a mecp certified installer in your area to to this for you ...
Get a multimeter cheap on ebay ,and test the red (positive wire from the radio with the key tuned to on position. should read 12v.. Key off should have 0 volts. Then check the yellow wire, should read 12 volts continuous with the car on or off. If you don't get a reading from yellow wire, you can run it from the battery into the car. Red, you would have to run from the fuse box and should only have electricity with acc on (key in ignition) If both red and yellow wires read 12v. you could have grounding issues. Use the black wire from the head unit and wire it to metal. These are the only 3 wires you have to worry about.
normally when an aftermarket stereo is installed the yellow wire is for constant power gets connected with the ignition power wire and what you said is what happens in result. get a multimeter, set it onto dc volts and put the black lead onto something metal and then id use the red lead to test wires for a constant 12volts when key is in the off position. Once a wire is found connect it to the yellow wire of the stereo
Red- 12 volts switched (ignition)
Yellow- 12 volts constant
Blue/white stripe- remote amp turn on/ power antenna
If you have any orange wires there for the Illumination dimmer. (head unit dims when you turn the lights on). The white and gray are front speakers and purple and green are for the rear, solid being + and black striped being -. (gray and purple are right channels)Make sure that the RCA plugs go to the input side of the amp. I hope this helps, Ray
I would suspect a bad power supply. Before doing anything make sure power is actually getting to the computer. Check the power cord with a volt meter. You should have around 115 volts. If all is well you need to see if the power supply is putting out the correct voltage. Open the PC up and set the multimeter to DC voltage.
Turn off the PC, but do not unplug it. Open the system unit. Set the multimeter to read DC volts in the next range higher than 12 volts. Locate a power connector similar to the hard drive (or CD-ROM drive connector that is unused) and turn on the PC.
You can also unplug a drive connector and use it. Turn on the PC and insert the BLACK probe into the power connector on one of the BLACK wires. Touch the RED probe to the YELLOW wire on the power connector.
The multimeter reading should be +12 volts. Now touch the RED probe to the RED wire and the reading should be +5 volts. If no readings or different readings occurred, you’ll have to replace the power supply. If the readings were correct, you should check the P8 or P9 connectors at the motherboard. These connectors may also be named P4 and P5. To check these connectors, perform the following:
Insert the BLACK probe into P8 at one of the BLACK wires. Insert the RED probe into the P8 connector at the RED wire. The reading on the multimeter should be +5 volts.
Check the power going to the motherboard connections by inserting the RED probe into P8 at the YELLOW wire and you should get +12 volts. Leave the BLACK wire touching the BLACK wire at the P8 connector. Check the BLUE wire and the reading should be a -12 volts.
Now move the BLACK probe to the BLACK wire on the P9 connector. Test the WHITE wire by inserting the RED probe and the reading should be -5 volts. Check the RED wires on the P9 connector and you should get +5 volts on each red wire. You won’t get exactly 5 or 12 volts, but the readings will be very close, such as 5.02 volts.
If the Power Supply is a couple of volts off in either direction, such as when the RED wire should be reading -5 volts but it reads -8 volts, or if there are no readings, replace the power supply. Curtorsey: IT Professionals
The yellow/black wire is for the foot brake and the yellow/blue is for the parking break. These wires need to be hooked up in line with the pinch connectors to the correct wire. The yellow/black wire needs to hook up to the wire to the foot break lead wire before the switch and the yellow/blue needs to hook up to the lead wire before the parking brake switch. This is a sefty feature to deactivate the video display because it is illegal to have video in the view of the driver while the vehicle is moving. These wires are used to tell if the car is stopped.
first take out the stock head unit, after the colors of the wires originally from the car is usually red black yellow orange blue or gray, blue or gray w/ stripe, and purple or green, and purple or green w/ stripe. the head unit should have a power on it for the speaker wires those are the only tricky ones. color with stripe is negative. yellow for +12 black for -12 ground and red is for ignition, turn the radio on with ignition on. purple is usually rear and blue is usual front
the easiest way to solve this issue is to buy a wire harness for your car this will make the install alot easier. Its already color coded for your wires, so head out to your local installer or try best buy you might also need a stereo kit. Email me with questions on installs. email@example.com
Hi have we spoke before in previous post? the red can go to any 12v live peramanent such as wire to clock or other item that has power with ignition off and the same with the yellow if your putting these to the same permanent live say from clock you can join these to together red/yellow to red on clock the black can go to any metal or neg wire. This should then have your device working the only problem im looking at for you now is the pink wire as this stops you using the device whilst driving as it goes to handbrake but i need to find out if its live or negative. You could just wire the red/yellow to live and black to earth then see if it switches on and works if not then let me know and ill see about the pink wire ok Makes sure you use inline fuses on the live wires so as not to short the device out. Make sure you know what is permanent live to put the yellow/red wire to. It doesnt need to be ignition it only says this so you cant use it with ignition off but you can wire it into any live feed from clock or switches so its up to you what to wire it to its just the pink wire im concerned about.
PINK: does it tell you to put it to live or earth on handbrake switch?