Amazon: ARB M002 IPF Wiring Loom: Automotive Oct 17, 2016ARB M002 IPF Wiring Loom This wiring harness was perfect for my application. I put it in a 2002 Jeep TJ Wrangler. The harness was a perfect length. The relays mounted on my firewall just above where the air conditioning lines go through the firewall. The + and - 4.5/5(7)Price: $125.4Brand: ARB ARB Compressor Wiring Harness | Marlin Crawler, Inc. ARB Compressor Wiring Harness are direct factory replacements for ARB air locker setups. They are also great if you are supplying your own air source but still need to wire up the electric solenoids. Note: the compact wiring harness does not use a relay.