Stereo getting no power. -
LinkBack Thread Tools
post #1 of 3 Old 04-11-2013, 02:43 PM Thread Starter
Registered User
Join Date: Dec 2012
Location: mentor
Posts: 16
Stereo getting no power.

I'm trying to install a new pioneer head unit to replace my old stock one in my 1997 TJ. Today I went out to replace it after splicing the wires for the wiring harness and doing all the prep work, and found out the stereo still would not work. I was hoping that the reason my old stock stereo did not work was because of the head unit itself, but I was not so lucky. I was hoping you guys could help me out with a few questions that would help me troubleshoot.

The first question I have is why the head unit is not getting any power. My Jeep has a host of electrical problems (like having to punch the steering wheel for the turn signals and wipers to work). I changed the fuse and still no help. Any ideas on why this is?

Secondly, on the wiring harness that I purchased from Wal-mart has three adapter things. One large gray one, one smaller gray one, and one small black one. Most of the wires seem to come out of the large gray one, but it does not connect anywhere. The smaller gray and black ones both have connectors, does anyone have any idea why this would be or if it's even a problem?

Lastly, the black wire that comes out of the plug that goes into the back of the stock head unit goes connects somewhere else than where all the other wires go. It seems to go through the firewall behind the top left corner of the passenger air bag. Does anyone know why this is/where it goes to/ and if I have to connect anything in the same spot from the after market head unit?

Thanks a ton!

jayjitsu is offline  
Sponsored Links
post #2 of 3 Old 04-11-2013, 09:31 PM
Registered User
1997 ZJ 
Join Date: Feb 2013
Location: Youngstown
Posts: 300
Not sure on the first one. Check the yellow and red wires where they connect to the new radio. Yellow should be constant positive, Red should only be positive with the key on.

The plug is made to fit many vehicles. Just plug in the ones that match your Jeep. My 97 Grand sounds the same as yours. I only used the 2 smaller plugs, gray and black.

I think you mean the black wire that has a female spade connector on it that was originally connected to the factory radios chassis? If so that's your ground wire. You need to splice it to the black wire on your new harness. The connector on the black wire should look almost like this:

If the ground is not hooked up that would be the first thing I would try. No ground=no power.
This may also help. Of the two grounds shown, only one should be used on your jeep.

Rust never sleeps...
MyKeyB is offline  
post #3 of 3 Old 04-11-2013, 09:41 PM Thread Starter
Registered User
Join Date: Dec 2012
Location: mentor
Posts: 16
I found out through another post that the ground was indeed not connected, but the black wire actually comes out of the plug that all the wires come out of (the one that attaches to the rear of the factory head unit). I have a longer black wire that i just connected to the matching black wire of the wiring harness, which i believe was a mistake. I found out i might have to connect this to the ground on the jeep, likely the easiest place would be where the current one is connected.
jayjitsu is offline  

power , stereo

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome