OEM AUX Switches in a Classic

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DoughRat19

Senior Member
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Oct 6, 2020
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Location
Massachusetts
Ram Year
2019 Classic
Engine
Hemi 5.7
Got my hands on a factory AUX PDC so figured why not wire it up! It was actually a pretty simple install. Just had to run one wire to the main PDC for the trigger, the 5 AUX wires into the cab to the switch panel, and power and ground for the AUX PDC.

The only hiccup I ran into is getting the AUX settings to show up in the EVIC and Uconnect. I believe this is another issue with radio software changes. Because the AUX switches were not a factory option on 1500’s, those settings do not show up even if you turn them on. I tested this theory by using alfaobd to update my truck as a 2500 (which isn’t a fix since this will trigger other codes) and the AUX settings did show up in the EVIC almost immediately (and then disappeared when I changed the settings back to a 1500). The good news is, you can still use alfaobd to update the individual AUX switch settings, it’s just not as convenient as having them available in the EVIC/Uconnect.

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Special K

Member
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Oct 19, 2019
Posts
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Location
AL
Ram Year
2014
Engine
HEMI 6.4
Do you have any more information/guidance on running the wires from the Aux PDC to the existing wiring in the truck? I found an AUX PDC as well but am stumped on how to connect. It looks like the wiring harness behind the switch panel inside the truck already has wires in the correct locations, but i dont know where they terminate. Any help would be much appreciated.
 
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