Warning: I am electronically challenged.
I installed a Jensen stereo and speakers in my 1968 Lincoln. It seemed very straight forward, but has turned into a nightmare. I connected the wires using a cigarette lighter “constant hot”, frame body for “ground” and the original radio wire for “ignition hot”. I connected the speakers as advertised with all new wire, ie: violet to (+) and violet with black stripe to (-).
The problem is that my right speaker is always on. Does that make sense? It always hisses and drained my battery. When I put a battery charger on the car the hissing got louder. When I turn the ignition on (with the stereo OFF) the noise gets even louder. I can hear it when the car is running also. If I disconnect the (+) or (-) speaker wire then the noise stops, but when I reconnect it the speaker jumps and pops then makes the noise.
Turning on the stereo makes music and I think the noise goes away, but I can’t really tell for sure.
You need to re check all of your wiring and be sure that none of the speaker wires are touching and grounding out.
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txblockbeater
Man, thats screwed up!! I think that you have a wiring problem of some sort A lot of radios have a 12V output for a power antenna or external power output, maybe you're tied into one of those??? The other thing is, a blown output can put 12V on a speaker output, but it usually blows the speaker.
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HotRod