1968 Mustang
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=32296
Printed Date: May 17, 2025 at 7:01 PM
Topic: 1968 Mustang
Posted By: jugga-nemo
Subject: 1968 Mustang
Date Posted: May 17, 2004 at 6:07 PM
I am trying to install a deck into a 1968 Mustang (straight six), but I can't get teh darn thing to turn on. I know I need to run a constant and I tapping into the existing accessory wire for the stock deck, but nothing. I tried two different decks just to make sure that the one wasn't fried. Any suggestions would really help (both the install and my friends wallet). Also, if it helps, the car only has the one center speaker with the stock radio (not even a stereo). Thanks!
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5.25" Components & 5x7 Coax Kappas w/Power Acoustik OV4-800
KAC 7252 powering 2 D3 8" Diamonds
KDC-MP728, KGC-4042A
Replies:
Posted By: jugga-nemo
Date Posted: May 17, 2004 at 6:09 PM
Just to clarify, I ran a seperate constant to the battery, and then tapped the accessory wire from the stock radio to the accessory wire on the decks.
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5.25" Components & 5x7 Coax Kappas w/Power Acoustik OV4-800
KAC 7252 powering 2 D3 8" Diamonds
KDC-MP728, KGC-4042A
Posted By: Sweekster
Date Posted: May 17, 2004 at 6:35 PM
Try connecting the head unit's accesory wire to the ACC wire in the steering colum and the ground it to the battery (do this just to test it). If it works then try moving to the ground so clean (scrape off the paint) area on the firewall or floor. ------------- Duane...
If you think you're confused, imagine how you feel. 
Posted By: raydawg357
Date Posted: May 20, 2004 at 2:47 PM
Another to consider is most older fords are common ground. New HU won't play with the speaker wires in this configuration. I'm not sure if this is your situation, just something to consider.
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Do it right the first time
Posted By: jugga-nemo
Date Posted: May 20, 2004 at 2:50 PM
So would I have to hook up a new set of speakers to the HU?
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5.25" Components & 5x7 Coax Kappas w/Power Acoustik OV4-800
KAC 7252 powering 2 D3 8" Diamonds
KDC-MP728, KGC-4042A
Posted By: raydawg357
Date Posted: May 20, 2004 at 2:54 PM
No, just rewire them. If they are common grounded, they will all be grounded to the chassis. you will need to run speaker wire from the new HU to each speaker.
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Do it right the first time
Posted By: kgerry
Date Posted: May 20, 2004 at 3:24 PM
you may not be able to if they are a self grounded speaker tho....many of the old ( i'm dating myself here ) Chryslers and Fords used a single terminal self grounded speaker...and you would have to replace these if that is the case..... if the speaker has two distinctly different terminals on it then it shouldnt be a problem... if only one terminal then you need to replace them.... also, make sure you dont foolishly hook up R & L to the center dash speaker ( i've seen that done a few times ) ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
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