Originally Posted by MRT2
If you run the Rigid Dually's to replace the OEM foglights, is it a matter of splicing the Rigid wires into the OEM wires without relay?
If you use Duallys as OEM fog replacement, you can just splice into the existing harness. Works great, I did it. You MIGHT get some very small flicker that is only noticeable at night. And this is flicker with the fog lights off. They will just sit there and lightly flash. Kinda weird.
If this is a problem (and it is not for me), you could build a cable harness similar to the SMS Truck Lite harness that has relays in line and terminated into the OEM harness. I was going to talk to SMS about building one, but at $100+ it didn't seem worth it.
Another note... DO NOT USE D2 to replace the OEM fogs... they are way too bright (the D1 are almost too bright).