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.

 

[06flex]

I'll have to look into that tomorrow or this weekend. I'll pull the new cd player and look for this pink wire. Thanks for your help and patience with me on this.

 

[06flex]

Alright these are my findings.
1. I plugged factory radio back in to verify that the rear door speakers worked with it and they do work with factory radio.
2. I see the pink wire on the factory harness and noticed that the wiring harness with the new head unit does not have a wire to support this.

So my questions are as follow.
1. Is the factory amp located under the carpet?
2. If so how do you get just that section of carpet up or am I going to have to take up all the trim panels on the floor around it. ( if this would have been my jeep the carpet comes out very easy)
3. Once I get to the amp what do I do next? Can my new head unit power it or am I going to have to get another amp and wire it to the rca's on the head unit and run it a separate ing.power wire. (if this is the case I will just replace with better speakers at the same time.)
4. Could I simply unplug the speakers going to the amp and the wires going from the HU to the amp and wire those together to make them work or does it not work like that?
Thanks in advance.

 

[06flex]

Ok may have had a small break through (maybe). I found a wire unused on the new HU labeled "system remote control". At first I thought that this had to do with the remote that came with the HU but after reading the manual that came with it ( amazing what reading the manual can do) I am thinking that it might be used to control an amp. So my new question is can I wire that remote wire to the factory harness and make the factory amp work?

 

[SunlitComet]

If that "system remote control" is active anytime the HU is actively on and running hook it up to the pink wire and you should be good.

To be sure give me the make and model of HU so I can look at wiring for you because that wire could be for some other function. At worst case who up the pink to the switched power wire from the dash to radio and it will be on when the igtion switch is on and hope the that that there is no noise in circuit when you actually turn off radio manually.

---------- Post added at 12:41 PM ---------- Previous post was at 12:40 PM ----------

The amp might be under the carpet under the seat so you could carefully cut the carpet around it in a flap style.

 

[06flex]

Thanks for all your help. I hooked the pink wire from the harness to the remote wire and all is working now. I even used one of the unused wire on the harness I bought(labeled dash light) un pluged it and moved it in the harness to line up with the pink amp wire and did not even have to cut into the factory harness. Thanks again for all your help. Oh yeah it was just a cheap pioneer DEH-1300MP. I just wanted to be able to listen to pandora from my phone and need an aux port. Lot cheaper than going with a fm modulator. Thanks again

 

[SunlitComet]

The blue/white wire was the right one.

 

[rushtk]

can someone tell me the positive and negative wire colors for the roof speakers plz. I am putting 6x9's up there and need my polarity right. Thanks... and my amp was under the dash.

 

[David A my 99 hoe]

can someone tell me the positive and negative wire colors for the roof speakers plz. I am putting 6x9's up there and need my polarity right. Thanks... and my amp was under the dash.

I just did the same upgrade to mine. Passanger side is blue + light blue -. Drivers side is brown + yellow -.

 

[StrmStlkr]

Anyone know how the rear roof speakers are powered if there isn’t an amp present?

I’m assuming they are ran parallel off the rear door speakers but want to confirm. If so, anyone know where the splice is typically at?

I just replaced the head unit and front/read door speakers and everything sounded fine. I got some replacement rear roof speakers and hooked them up and everything sounds fine at lower levels. When I turn it up though it starts to sound distorted. Before, with the factory speakers in the same configuration, it sounded fine.

I’m thinking I’ve trying to power too much now off the aftermarket head unit and need to add an amplifier to the system. Before tackling that really looking to understand how it’s currently wired.

Any thoughts/suggestions are appreciated, thanks.

 

[Macks2DrTahoe]

Anyone know how the rear roof speakers are powered if there isn’t an amp present?

I’m assuming they are ran parallel off the rear door speakers but want to confirm. If so, anyone know where the splice is typically at?

I just replaced the head unit and front/read door speakers and everything sounded fine. I got some replacement rear roof speakers and hooked them up and everything sounds fine at lower levels. When I turn it up though it starts to sound distorted. Before, with the factory speakers in the same configuration, it sounded fine.

I’m thinking I’ve trying to power too much now off the aftermarket head unit and need to add an amplifier to the system. Before tackling that really looking to understand how it’s currently wired.

Any thoughts/suggestions are appreciated, thanks.

What year and trim level is your vehicle?