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Old 12-30-2013, 08:30 AM   #1 (permalink)
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Default AM head unit lost power

I'm working on a friends 2002 Mustang Convertible V6 with the Mach sound system.

Here is my problem, please help me figure this out, because I'm stumped at this point.

I used these as references when installing the new head unit. (which were great by the way)
How to install aftermarket radio with mach 460
http://mustangboards.com/show-shine-...-mustangs.html

I hooked it all up, and checked it to make sure it was powering on before installing in the console, it worked. checked all speakers and subs, it worked. Then installed in the console, and it didn't work, pulled it out, and the head unit plug had popped out of the head unit. No problem, put it back in, but it kept popping out due to tension from the wires I'm guessing. After a couple times of that happening, it decided it didn't want to power on all for me.

I checked my wiring, and the 2 of the grounds had come loose, so I fixed that, checked all the other wiring, it was good. Still didn't want to power on. So I checked the radio fuse under the dash and replaced it, it STILL doesn't come on.

It has power, it's grounded, fuses are good, speakers are good, wiring is good. I'm stumped. It came on at first, then now won't. Any help would be greatly appreciated!

Thanks.
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Old 12-30-2013, 08:45 AM   #2 (permalink)
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This isn't really much help, but Ford radios are pretty damn sketchy. They break all the damn time.

You are sure that all of the power and ground connections are good?
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Old 12-30-2013, 09:33 AM   #3 (permalink)
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Quote:
Originally Posted by snm95ls View Post
This isn't really much help, but Ford radios are pretty damn sketchy. They break all the damn time.

You are sure that all of the power and ground connections are good?
It's a brand new aftermarket Kenwood stereo that I'm installing so the radio should be perfect. I checked all the ground and power wires, along with every wire on the harness, over pretty good when I pulled it back out, so I'm pretty positive it's good. I did everything but rebuild it lol
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Old 12-30-2013, 09:35 AM   #4 (permalink)
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Ah reading > me.

Did you check the fuse on the back of the radio itself then?
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Old 12-30-2013, 09:38 AM   #5 (permalink)
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Try powering it up from the battery to see if it still comes on or not. Then test the plug on the chassis to make sure power and ground are going to it. A pin might have come loose.
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Old 12-30-2013, 10:16 AM   #6 (permalink)
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Quote:
Originally Posted by snm95ls View Post
Ah reading > me.

Did you check the fuse on the back of the radio itself then?
Yep, it's still good too. I think this car hates me.

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Originally Posted by 2jzdreamin View Post
Try powering it up from the battery to see if it still comes on or not. Then test the plug on the chassis to make sure power and ground are going to it. A pin might have come loose.
I'll do that, thanks 2jz, I'm working until 5, but I'll get back on here later tonight and update on it.

Anyone have any other suggestions as well?
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Old 01-07-2014, 06:16 AM   #7 (permalink)
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Still haven't gone back out to work on the Mustang, it's been way to cold and where it's at doesn't have light. So yea, we're waiting until Texas decides it's time to be warm again.... Which could be tomorrow, or next month, who knows :/
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Old 01-12-2014, 01:21 PM   #8 (permalink)
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Ok, so the wiring I checked the harness and fuse box with the volt meter and the fuse box is only getting .5 while everything else is getting 24... What do I do now?
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Old 01-12-2014, 05:55 PM   #9 (permalink)
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24V, that can't be right!
The car should see ~14v max,

Start tracing the power and find where it stops and that's your problem.
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Old 01-30-2014, 07:42 PM   #10 (permalink)
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I'd follow the power wire all the way to the battery it could be that the wire got rubbed and is shorting out.?
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