Help Center · Wiring

How To: Wire A OB2 Air Compressor

Air Zenith's OB2 is a capable, power-hungry air compressor. Without the proper wiring, this compressor will not run it's best.

Air Zenith OB2 Air Compressor
HornBlasters OB2 Wiring Kit
Wire crimp tool

How to wire an Air Zenith OB2 air compressor

Note: The live Help Center article for this topic is short/incomplete. The sections below use all available live wording and images.

What's In The Kit

The HornBlasters OB2 Wiring Kit is paired with the Air Zenith OB2 compressor for this install. Have a wire crimp tool ready before you start.

The Wiring

70A relay and bottle-cap pressure switch

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.

Use the correct wire gauge

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.

Do not undersize the power wire. Undersized cable can overheat and become a hazard under OB2 load.

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