On Board Air System
Finally had a chance this afternoon to finish the installation of the On Board Air System.For the air compressor, I chose the new ARB CKMA12 model which is advertised as a high output on board air kit (PN 2102MA12). This ARB kit is very complete and can be used to air up tires as well as providing an air supply for the air lockers. A pre-made harness is part of this kit but since I'm not using air lockers, I made a very simple harness to bring +12V to the air compressor which is installed on the driver's side rear quarter panel.
Using the backer plate, the holes locations are transferred. Two additional holes are also drilled for the switch and power cable.
This is the relay and switch harness. I used a RS toggle switch with safety cover (PN 275-601) instead of the ARB switch (simpler to drill a round hole).
Toggle switch with safety cover.
The OBA system installed. The kit does not provide a QD so I added a 1/4" NPT QD. With this location for the air compressor, it would be fairly easy to add an air tank at a later time under the rear cargo area.
Here are some specs on the ARB CKMA air compressor:
Max current draw: 23A (under load)
Air flow: 2.65 cfm at 0 psi; 2.18 cfm at 29 psi
ARB installation guide
I'll post feedbacks at later date on this compressor's performance.