just wondering if you got them to work hooking them up to the Parking light wire(black/red) I hooked mine up threw the same wire, but I did it through my own relay switch because I thought that the parking light circuit would have to much amperage running through it, works good if this way doesn't work for you. Let me know and I can give you a diagram if you can't get it too work. I take no offense to the comments earlier, if your gauges are like mine then they turn out nice.