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99 jimmy speakers

3 messages,  Last post on Nov 10, 2008 at 2:19 PM

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#1 of 3 99 jimmy speakers by mtlwiz Nov 10, 2008 (5:45 am)
99 jimmy am-fm-cd stock unit, both rear speakers quit at same time. anyone know if theres a common circuit to check or what possibly could do that? Replies to this message: jlflemmons (Nov 10, 2008 2:19 pm)
#2 of 3 Speaker problems by duntov Nov 10, 2008 (6:10 am)
It is usually a short, bad ground or a loose connection that develops over the years. Do not replace the speakers until you have verified that the wiring is good. Move the connections on the radio and the speakers around to see if the speakers will start working.   My right hand dash speaker quit and I swapped both speakers from left to right and I moved the wiring around a bit, now both speakers work. Either a loose connection or a short in the wiring to the RH speaker was the cause.
#3 of 3 Re: 99 jimmy speakers [mtlwiz] by jlflemmons Nov 10, 2008 (2:19 pm)
Replying to: mtlwiz (Nov 10, 2008 5:45 am) As stated above, check the connections at the rear of the radio, and follow the harness down through the dash checking for damage.   While not impossible, the likelyhood of both speakers croaking at the same time is not likely. You could lose the rear channels, however. A cheap but effective trick for checking the wiring and speakers is to pull the radio, and disconnect the speakers from the back. Using a small portable radio, plug into the earphone jack with wire attached and stripped. Then you can connect the wires to each of the speakers and see if you get sound. The little radio will not have enough power to damage the speaker if you connect it backward, and you will know if the speaker and the wiring to it is good.   Shadetree radio diagnostics, 101.

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