mike_1212

Like i said, test at the stereo harness for the others....

Beegee208080

thanks for your help mike.

i didnt cut the wires but probed the crimped metal where the wires feed into the original harness. With music playing all show (AC) 13V Except the power wires which show 26V. without music playing all the speaker wires read 0V

The only speaker wire pairs showing any resistance or continuity is the rear left, where I can hear sound when playing the radio

Beegee208080

ok now completly lost.

went into my trunk to look at the right rear speaker (the one that doesnt play) uncoupled the harness to the speaker, looked around a little bit, plugged it back in.

played music from head unit, and now i have no sound, the left rear speaker that i didnt even touch no longer plays.

interestingly, i checked the resistance on the wire pairs again the radio harness, and now suddenly all show 4 ohms and continuity. i played music (no sound) and checked the voltage at both terminals in both rear speakers in the trunk, all showed 13V (AC), same as from the harness

i am lost

Beegee208080

scratch that. theres no continuity on any of the wire pairs. but there is voltage 13V (AC) on the speaker terminals when the head unit is playing music

....

mike_1212

You have 13v ac on each speaker channel at the head unit with music playing? But nothing at the speakers correct?

mike_1212

If so then you have bad connectons at those crimp connectors on the harness adapter. Cut and re- connect each of them making sure they are paired accordingly.. ( ie, purple and purple w/ black is one channel greens are another whites and greys another) which channels the colors represent i cant remember... but the adapter has them pinned accordingly for the cars wiring... shoule b a sticker on the head unit telling you which channel each color is.

Beegee208080

no, i have 13V ac at each speaker channel at the head unit AND the speakers themselves, where the wires attach (at least both rear ones in the trunk) when music is playing (but i have no sound)

no voltage when no music is playing

mike_1212

Does the voltage change and bounce around?

mike_1212

If yes, then speakers are bad... if no then the preamp in the head unit is bad and the head unit must be replaced..

mike_1212

Honestly, i think its just bad speakers.... pretty cheap to replace....

DOHCtR-V

If it's bad speakers, what are the odds all of them are done?
Most of the time you'll hear some distortion if they are done.
Check your remote wire, & make sure all the speakers have the proper connection either with solder, or heat shrink. Tape usually fails over time with change in weather.
Cheap diagnosis.

If all else fails, then I'd try the options above.

mike_1212

Odds are the speakers because of 2 things.. first there is power to the speaker when music is playing... and 2 the speakers have been "cutting in and out for months" and getting worse... this tells you that either the connector on the speaker is bad.... or the leads connecting to the coils are bad... hell could be the coils themselves.... op. Grab any old speaker you can find.... connect it in place of one of your rear speakers.... do you hear your music? Now dont get me wrong there is still a possibility of a short in your head unit... but i think your speakers have just retired....

I know you really dont want to mess with those crimp connectors.... but you really should solder those connections....

DOHCtR-V

Also check that the wires are not exposed.
Exposed wires can rub up against the door panel causing a "short".