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Air Zenith's OB2 is a capable, power-hungry air compressor. Without the proper wiring, this compressor will not run it's best.
HOW TO: WIRE A OB2 AIR COMPRESSOR
Air Zenith OB2 Air Compressor
HornBlasters OB2 Wiring Kit
Wire Crimp Tool
THE WIRING
The OB2 compressor uses a 70A relay in conjunction with a bottle-cap style pressure switch. The OB2 includes a pre-wired socket for the compressor that accepts the included 70A relay. Most of the hard work is taken care of for you out of the box.
Air Zenith recommends a minimum wire size of 6 gauge. Anything smaller than this will not work. If you plan to mount the compressor more than 6 feet away from the battery, you must use at least 4 gauge wire. This is extremely important as too small of a wire can become a hazard.