Need help rear speaker

[99HOEkidd]

Today I just installed a jvc arsanal cd player , and after I hooked it up the rear door speakers didn't work and the speakers in the roof works and the thing under the seat is for my power seats so how am I suppose to get the rear speakers to work any one know how? Thanks in advance.

 

[SunlitComet]

how about more model details on your vehicle li trim level and stock stereo options installed.

 

[qukon 95]

there is a little silver box under your seat or under the dash with
wires on 1 side of it and did u buy the harness or cut the wires
when u put the jvc in?

 

[99HOEkidd]

Its a 99 tahoe ls it had the stock system with the add looking cd player and also I used a wiring harness

 

[99HOEkidd]

is it the small box with the fins and the small red dot on it

 

[SunlitComet]

There would only be one electronics box under under you drivers seat and it would be the power amplifier.

Here is the diagram for the original system:


With Power Amplifier
Electrical Diagrams

Notes

Radio And Power Amplifier (Part 1 Of 2)

Notes

Radio And Power Amplifier (Part 2 Of 2)

---------- Post added at 05:09 PM ---------- Previous post was at 04:35 PM ----------

Without Power Amplifier
Electrical Diagrams

Notes

Radio And Power Amplifier: Without Power Amplifier

 

[06flex]

I am having the same problem after installing new head unit. I also used a wiring harness. I looked under drivers seat and saw a bulge under the carpet with wires going to it. I unplugged the harnes and the power seats stop working. Does this "bulge under the carpet" control the power seats as well as the amp? I have a 1997 GMC Yukon slt. I have power leather seat. Any help would be greatly appreciated. The rear roof speakers are working just not the rear door speakers. I was planning on upgrading to a little better speakers all the way around. I don't know what is involved in hard wiring speakers to the deck so I don't want to go that route unless I have to. I just bought a cheap pioneer DEH-1300MP so I could play songs off my phone. Any recommended speakers would also help me out to thanks in advance. I come from a back ground of jeeps and rock crawling. Know all about suspensions just not radios. Just looking for good sound.

 

[SunlitComet]

Ha, The amp is a bigger bulge if it has not been removed and would have its own connector. Apply 12volts to the pink wire on factory in-dash radio harness to see if Amp turns on.

 

[06flex]

I am 99% sure that I do not have a amp. So what else could it be? This is my thoughts..... The wiring harness only has right rear -+, left rear -+, right front -+, left front -+. So I am wondering if the wiring harness does not have a out put for the rear doors. I used all the wires that came with the cd player but I had three wires left over on the harness labeled power antena , dash light, and dimmer light on the harness. I am pretty handy with the solder gun and wiring ( I have wired some pretty complex rc air planes). I just need some help on this one. How do I get power to the rear door speakers?

 

[SunlitComet]

if your vehicle has rear roof speaker working and front doors but not rear side doors, I am 99% sure you have an amp or had it before someone removed it. If you system was built without it the rear side and roof would have been run and wired parallel wire so both sets would be working unless you happen to blow them out. The pink wire I mentioned would have been in the original factory vehicle wiring. Also where the parallel runs were spliced are buried behind the dash in the cross body harness.