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Car Audio Help
Wiring, Electrical & Installation
Car Unit Wired to All ACC Power?
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<blockquote data-quote="Skydronaut" data-source="post: 8516740" data-attributes="member: 670454"><p>You should use a multimeter (it's easy to find a really cheap one for this kind of application) to measure resistance in the positive and negative lines in the wire harness for your h/u. These should give near-zero ohm readings. Either your power or ground can be shot. If they are both reading low resistance, you are going to need to check for power with the multimeter- connecting the positive and negative wires to your multimeter in DCV mode. Shouldn't get more than 14ish volts with the car running.</p><p></p><p>I do not recommend hooking up an aftermarket stereo to your cigarette lighter power and ground wires! I don't know your car's electrical schematics, but the wires for that component likely aren't the proper gauge for a power-******* device like an aftermarket h/u. How many amps are you planning on drawing with your aftermarket h/u? Also, the lighter fuse most likely is the wrong value (if it has its own fuse, that is).</p></blockquote><p></p>
[QUOTE="Skydronaut, post: 8516740, member: 670454"] You should use a multimeter (it's easy to find a really cheap one for this kind of application) to measure resistance in the positive and negative lines in the wire harness for your h/u. These should give near-zero ohm readings. Either your power or ground can be shot. If they are both reading low resistance, you are going to need to check for power with the multimeter- connecting the positive and negative wires to your multimeter in DCV mode. Shouldn't get more than 14ish volts with the car running. I do not recommend hooking up an aftermarket stereo to your cigarette lighter power and ground wires! I don't know your car's electrical schematics, but the wires for that component likely aren't the proper gauge for a power-******* device like an aftermarket h/u. How many amps are you planning on drawing with your aftermarket h/u? Also, the lighter fuse most likely is the wrong value (if it has its own fuse, that is). [/QUOTE]
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Car Unit Wired to All ACC Power?
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