That's good information to know Rich! I'm glad I haven't cut up my wiring yet and installed a second switch on the parking lights. So if I'm understanding correctly, I should be able to get say a '66 pick up switch without "marker" lights and still plug that into my harness? I understand the mod making the parking lights stay on (although I don't get why..), but I'm not sure how I could modify the existing switch to keep the parking lights off since its not like I have the two wires connected together..