Upgrading Canadian Ram 1500 RA2 to RA4 NA.

[bgause]

Hi,
I am having an issue with upgrading my radio. I have a 2015 Ram 1500 that was purchased from Canada and has a RA2 radio. I was given a RA4-NA radio from a 2017 Ram 1500 that is working fine in that truck. If I plug it into my truck it immediately blows the audio fuse. I can put it back in the 2017 truck and it works fine. I can reinstall my RA2 in my truck and it works. The only other difference in the trucks is I don't have audio controls on my steering wheel. Is there a wiring difference because the truck was manufactured in Canada? Maybe a adapter harness?
Thanks,
Brian

 

[audiophile]

From what I have seen there is a couple of different harnesses and a climate control box that has to be added as well as the bezel for the larger radio.

 

[Gordo2212]

How To: Install a 2018 4C (UAQ/UAS) Radio in 2013 - 2017 RAM

For the 2018 model year RAMS, the 8.4 Radios were changed from the previous VP3/VP4 Harman radios to the 4C/4C-Nav radios made by Panasonic. The biggest advantage of these new 4C Radios is the support for Apple CarPlay and Android Auto. The radios themselves fit the same mount as 2013-2017...

www.ramforum.com

Here’s an entire thread on upgrading radios on Ram trucks.

 

[SitKneelBend]

Hi,
I am having an issue with upgrading my radio. I have a 2015 Ram 1500 that was purchased from Canada and has a RA2 radio. I was given a RA4-NA radio from a 2017 Ram 1500 that is working fine in that truck. If I plug it into my truck it immediately blows the audio fuse. I can put it back in the 2017 truck and it works fine. I can reinstall my RA2 in my truck and it works. The only other difference in the trucks is I don't have audio controls on my steering wheel. Is there a wiring difference because the truck was manufactured in Canada? Maybe a adapter harness?
Thanks,
Brian

You shouldn't be blowing a fuse, the wiring should be identical between countries as far as I know. Have you inspected the pins on each radio themselves? Also, try leaving the USB harness unplugged.