Trying to install mine right now (Apexi). I bought it off of Ebay. It was used on a kid's Honda, but when he shipped it to me it came with everything........and then some. It came with the control unit, relay unit, and instructions. But he also added a bunch of random wire along with 3 relays. I would assume the relay box they give you is all you need, but I would like to just make sure of this.
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