Just my $.02 but, Airtex is a large manufacturer of OEM and aftermarket fuel pumps. I have one in my Wrangler that I put a V8 in. Never had a moments problem with it, and it has been through some rough stuff. I personally wouldn't hesitate to buy a relay module from them, especially at this price. They make a lot of aftermarket fuel pump circuitry and I haven't heard any complaints about their products. I believe they utilize all North American manufacturing plants as well, not 100% on that though.