From: NONONOmisc07@fmguy.com   
      
   In sci.electronics.repair, on Thu, 17 Jul 2025 22:43:31 GMT, "John   
   Keiser"  wrote:   
      
   >Michael Trew wrote:   
   >   
   >> Hello,   
   >>   
   >> I bought an old Ford Ranger digital AM clock radio from a   
   >> pull-a-part. I was surprised to learn that they bothered to make an   
   >> AM-only digital radio by the 90's.  One would think after analog   
   >> radios, it would have been cheaper to make all the "new" digital   
   >> radios AM and FM.  I figure it's rare to see one of these AM radios   
   >> today, not replaced.   
   >>   
   >> Someone chopped the radio wiring harness in my truck (I wish I saved   
   >> the harness from the yard).  I wired another harness in, but I   
   >> somehow shorted the hot wire off of the radio ground, I believe.  It   
   >> make a quick spark at first, and now the radio doesn't function.  The   
   >> back-light will illuminate when the headlights are turned on, but   
   >> that's it.   
   >>   
   >> I'm hoping someone has an idea on how to fix this.  I'd like to wire   
   >> in a closed circuit 1/8" AUX audio jack, and use the radio in my   
   >> truck.  I did that with a stock GM Delco radio once.  As soon as you   
   >> plug the jack in, it cuts the radio off.  I don't see anything burnt   
   >> inside the radio.   Maybe I need to replace a capacitor or resistor?   
   >>   
   >> Thank you all in advance for any solutions!   
   >   
   >Isn't it more likely that you blew the car's fuse feeding the radio.   
      
   Yes, definitely, based on "I somehow shorted the hot wire off of the   
   radio ground, I believe".  How would this involve the radio itself?   
      
   >I think the backlight circuit is separate from power.   
      
   Yes, the same circuit that powers the other dashboard light, so you can   
   make them dim or bright.   
      
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