speaker rewiring symptom
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Fleet Mechanic
Joined: Apr 2003
Posts: 1,460
Likes: 6
From: Florida
speaker rewiring symptom
Weird electrical speaker connection symptom in my 1997 Aerostar:
1) I rewired all 4 speakers with independent wires.
one of the rear speakers is grounding out itself. The other 3 speakers work correctly.
as you all know, the rear speakers are mounted to metal brackets which in turn are screwed to the body.
but whenever one of the brackets touches the body I see electrical sparks as if the bracket was "hot" and then the speakers do not sound. As soon as I separate the bracket from the body, the speakers work fine. (Kenwood 6 x9).
I have checked, double and triple checked all connections at the radio harness plug and at the speakers and everything is correctly wired. All Grounds and Hot wires are correctly connected.
2) at the original harness Power plug, there are two Grounds: One is Black, one is Black with Lite Green Stripe. I cut the Black Ground from the harness and spliced the Radio Ground to it. Could I be using the wrong Ground?? Should I forget these 2 Ground wires and ground directly from the radio to the chassis?
the only other possibility I can assume for the one speaker issue is that one of the new wires' Hot insulation has somehow been cut and is touching the body at some point, I will check again today the wiring in question.
1) I rewired all 4 speakers with independent wires.
one of the rear speakers is grounding out itself. The other 3 speakers work correctly.
as you all know, the rear speakers are mounted to metal brackets which in turn are screwed to the body.
but whenever one of the brackets touches the body I see electrical sparks as if the bracket was "hot" and then the speakers do not sound. As soon as I separate the bracket from the body, the speakers work fine. (Kenwood 6 x9).
I have checked, double and triple checked all connections at the radio harness plug and at the speakers and everything is correctly wired. All Grounds and Hot wires are correctly connected.
2) at the original harness Power plug, there are two Grounds: One is Black, one is Black with Lite Green Stripe. I cut the Black Ground from the harness and spliced the Radio Ground to it. Could I be using the wrong Ground?? Should I forget these 2 Ground wires and ground directly from the radio to the chassis?
the only other possibility I can assume for the one speaker issue is that one of the new wires' Hot insulation has somehow been cut and is touching the body at some point, I will check again today the wiring in question.
Lead Driver
Joined: Sep 2003
Posts: 7,018
Likes: 210
From: SoCal
Check for continuity between the terminals on the speaker and its basket. There should be none. If you see a circuit, that means one of those internal speaker leads is shorting to its metal frame. If you're lucky, you may be able to find that and fix it. If you can't find it, you should take it back to exchange it for one that doesn't do this.
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Fleet Mechanic
Joined: Apr 2003
Posts: 1,460
Likes: 6
From: Florida
do you mean the Black Ground wire is a floating ground wire?
ok, I'll check that too. I spent the entire day checking the wire tip to tip and trying to figure this one out since it only does it in one speaker, the others sound fine.
Originally Posted by xlt4wd90
Check for continuity between the terminals on the speaker and its basket. There should be none. If you see a circuit, that means one of those internal speaker leads is shorting to its metal frame. If you're lucky, you may be able to find that and fix it.
Laughing Gas
Joined: Jun 2004
Posts: 1,240
Likes: 3
From: Dallas, Texas
No the solid black is the ground, the black with stripe is the floating ground.
Sounds like you need to back track the wiring, also make sure none of the old stuff in the rear control wiring is still touching metal.
Sounds like you need to back track the wiring, also make sure none of the old stuff in the rear control wiring is still touching metal.
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