ARB dual compressor wiring on the Jeep Gladiator. Virtually identical to the JL Wrangler, here is what you need to know to use the OEM aux switches for your compressor.
These OEM switches are easily programmable as either momentary on or latching.
For the aux switches, MOPAR gave us two pigtails - one under the hood and one inside the cab. Such an outstanding system and honestly one of the most underrated options on the JL/JT. Here is the under hood location:
And here is where to find the interior pigtail: Passenger side kick panel, disconnect the door wiring harness at the plug, remove limiting strap and the 10mm nut holding the kick panel. Panel pops off.
Once revealed, here is what you need to know starting with the diagram. Wires are identical on each pigtail.
I’m using Aux 4 for this install. Here it is exposed. Pick your switch wire per the color code and diagram above.
For the ARB switch wiring harness (just the switch, compressor power is a separate harness), you need the blue and the black wire.
Note: I am only using this compressor for OBA, I am not using it for air lockers. If you are using yours for lockers, your wiring will different.
Black is ground, I used the OEM post here for chassis ground with a marine grade shrink wrap ring terminal, same grade butt connector for the ground and the hot side - blue to blue for OEM Aux #4
Ready to put the kick panel back. Note the use of orange zip ties. This serves as “breadcrumbs” for later so I can see at a glance any wiring I have added/changed from OEM.