Question about Pioneer Car Audio & Video
Want to know the colour codes of power and speakers want to use it at home
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Posted on Jan 02, 2017
If you are connecting the negative lead of the voltmeter to the chassis of the car, and then checking the voltage at the amp on the ground power input of the amplifier, then your amplifier is not grounded properly. The amp should also be grounded on the chassis of the car, so if you have 4 V DC on it, it can not possibly be grounded to the chassis. The chassis is the same potential at any point on the car.
Could it be that the 4 V DC is at the power terminals +B or positive voltage? That would not be an uncommon thing to have since the amplifier will hold some charge after it is turned off and that would be normal.
Since you have a voltage meter, you could check the current draw of the amplifier if your meter also have a setting for current or amps.
If so, connect the meter in series with the ground of the amplifier. That means to disconnect the ground wire at the amplifier, and use the meter to complete the ground connection by putting one lead of the meter on the ground wire that should be connected to the chassis of the car and the other lead to the ground terminal of the amplifier. It does not matter which lead you connect to the wire or the amplifier, that would only make your measurement i postive current or negative current, but the meter must be set up properly for current. Most of them have a diiferent jack to put the positive lead into for current. most have two different jacks. If yours does also, choose the lead with the larger amp rating. Most have 10A and 300mA, the lareger amp rating is 10A. That is 10 amps max and the 300mA means 300 milli-amps which is .3 amps max.
Do this with the amplifier turned off and the car off. If you measure any current at that point you do have a current draw with the amp off and the amp would need to be serviced by a professional. If you have no current draw there, the amp is not the source of your battery draining. This would find out for certain if the amplifier is really draining the battery.
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Posted on Jun 27, 2008
SOURCE: PIONEER DEH 245
Most aftermarket radios follow the same color code. W G G P, White, Grey, Green, Purple. LF, RF, LR, RR. red is switched ignition, yellow is constant battery, black ground.
Posted on Sep 02, 2008
SOURCE: Hi - I have taken
When dealing with vehicle wiring, assume NOTHING! Your best bet is to go to a place that sells adapter plugs (wal-mart will probably even have them) and save yourself the hassle of trying to figure out the factory wiring. It will plug directly into the vehicle wiring harness and will have wire colors that should match exactly with most aftermarket car stereos saving you the guesswork. As an installer for over 15 years I have seen many attempts at wiring to a factory system without an adaptor plug and the results range from the system not working to doing major electronic damage to the stereo and even the vehicle.
In addition to it being a headache to try and figure out, many newer vehicles use some of those wires as data carrying lines and there are things in the factory stereo which control other things in the car ie: door chimes, air bags and others.
If you are hell bent on doing it the way you have started, please provide vehicle information and I can advise you further although I do not recommend doing it that way.
Posted on Oct 08, 2008
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