I’m at the death by a thousand cuts stage of putting my truck back together. I picked up a brand matching set of relays and the mounting holes are opposite each other. What’s going on here? Do I need to go back to Napa or are they all like this? Also, for whatever reason I can’t recall which holes the horn goes into. There is the larger body bolt that mounts it, along with an alignment tab. The are a set of holes that fit the spacing on both sides. I know mine was on the driver side, but wanted to confirm the location before I finalize the front harness and install the grill. Were dual horns an option?