T680 Radio replacement - Reception problems
10-26-2022, (Subject: T680 Radio replacement - Reception problems ) 
Post: #1
T680 Radio replacement - Reception problems
I replaced the factory radio on my 2014 T680 last week with a Jensen 1635BT unit so I could have bluetooth for both calling and streaming. I didn't not have to use any adapter harnesses. Everything plugged in fine with the exception of a single connector on the truck side that has a blue wire going into it. There is also an unused blue wire on the head unit that is to power an external amplifier. I did not use it. The bluetooth works perfectly fine but I get horrible FM reception and absolutely no AM reception. Where did I go wrong?
replyreply
10-26-2022, (Subject: T680 Radio replacement - Reception problems ) 
Post: #2
RE: T680 Radio replacement - Reception problems
Sounds like the antenna wire isnt connected or the antenna or wire is bad. Unless you have a bad head unit thats literally all that has anything to do with your radio signal
replyreply
 Thanks given by: Rawze
11-13-2022, (Subject: T680 Radio replacement - Reception problems ) 
Post: #3
RE: T680 Radio replacement - Reception problems
Evidently these trucks use a powered antenna. I pulled the headunit and spliced together the unused blue wire on the truck to the blue 12v AMP wire on the head unit and reception instantly improved.
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 Thanks given by: Rawze , Mrkentee




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