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On the 2020 cascadia there is the black connnector that i connect to your harness but there is 3 more connector, a blue, Green, and yellow, what are those connector for? And im doing what whit them? Thanks
February 12th, 2020
Those do not connect.  They are options for the factory radio only.  A aftermarket radio has no provision for these.  They could be sleeper controls, steering wheel controls etc.  Just leave them unplugged and tucked away show they want short.  If you wand to test before you install the aftermarket radio, unplug everything that will not plug into the BT ISO DIN from the factory radio and see what stopped working.  This can be done even before you install anything.  This will give you the choice to see if you can switch to a aftermarket radio and not loose something you really need or   Read more...
I have à 2020 cascadia with the delphi radio and i want to instal a kenwood kdc x304 what is the good harness? Thanks
February 8th, 2020
2020 uses the BT ISO DIN harness.  Wire this to your radios' pigtail and just plug it

I have a 2006 International 4500 and there is no sound coming the speakers. Speakers are good, when hooked directly to the stereo, they sound fine. Is there an amp or a fuse that could be blown?
January 16th, 2020
You don't say whether you are using the factory radio or have replaced it with a   Read more...
I have a BT-00257 harness and lost the wire color diagram can you send it to me.
January 15th, 2020
The wire colors are standard for all harness plugs, red ing, black ground, yellow battery.  Color will match to the pigtail of the new radios pigtail you are attaching it   Read more...
I have a 2019 peterbilt 389 with the smartnav and want to replace the head unit with an aftermarket radio, do you carry a harness?
January 8th, 2020
We have a Smart Nav harness which when used will give you power and speaker connection for a aftermarket radio.  You will loose screen function when OEM radio is removed.  Also customers find they need this antenna adaptor which we have as a combo buy.  Find both here, 3rd on the harness