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How is the subwoofer wired on a 2016 pete 587? Radio is only 4 channel
May 5th, 2018
Most of the manufactures in semi truck amp applications are using speaker level signal input to source the amps input.  The regular speaker output from any radio will work.  The only thing needed is to trigger the amp on.  On the newer models 2005 -up are using the BT ISI DIN harness and the blue wire with a white trace is used to turn the factory amp on.  So hook it to the similar color on your new radio install.  
Older models will sometimes use a seperate wire to do this.  Color is not as important as it will vary.  It is usually the only one left to hook after all the speakers are hooked and power hook up is finished you might notice one wire left and there is no sound but radio shows working.  If this occurs and you are sure the speakers are working and radio is wired correctly.  I have used a old common sense trick to actually test a trigger wire.  Use a inginition wire like the red one and add a pigtail to it with a 1 amp
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Need a wire harness plug for a 1986 eagle international semi
April 19th, 2018
The 1986 version of a International you would need to remove radio to look.  Text me a pic if you can't ID it.  Text to 336 528...   Read more...
What harness do I need to convert a 2004 international 12 pin connector in my 2005 truck to a 2009 international radio
March 28th, 2018
Follow the instructions on the page for International about removing the   Read more...
any idea how to replace the cabin speakers on a 2007 kenworth T600
March 21st, 2018
In detail no.  Better off asking the trucks service   Read more...
looking for the wiring diagram for a BT-00128 harness
March 18th, 2018
Check the package . The instructions are on the   Read more...