ford/lincoln parking lghts

I put a remote start in a 20008 Lincoln Navigator today. The parking light claimed to be claimed to be (-)blue/gray at the switch. I used positive in the passenger kick cause the negative circuit didn't work. I've had this happen several times with ford/lincoln vehicles with the so called "VW" headlight switch. The parking lights don't engage with a ground signal. Is there a wire that has to be interrupted at the switch like most VW's? I always use positive park lights on these vehicles but I'd like to go to the switch for ease of install. What is everyone else doing and what is the solution to the negative park light issue. Are the park lights only active with ignition? If so, I guess negative park lights isn't a option.I drink current, eat ohms, and bleed voltage

Ever since I saw a few posts about burning up the Headlight Switch on some F150's, I have always used the (+) Parking Lightwire, usually Violet/White, either at the SJB or DKP.  It's not as high a current draw as the old Brown (+) Parking Light wire inolder Fords and is usually easy to find and much safer to use.  Here is a link to the DEI Tech Tip #1096 about using the (-)Parking Light wire at the Headlight Switch :  https://www.the12volt.com/installbay/file.asp?ID=1238Soldering is fun!

Awesome! Thanks for the tech tip. That will come in handy on some vehicles.I drink current, eat ohms, and bleed voltage

I have noticed on those vehicles that if you use the dei parking light interrupt circuit on the negative parking light wire it will work as well, and keep the ground from backfeeding into the switch. I have yet to leave a vehicle in this configuration since I have not seen an actual diagram for these switches. It actually gave a better result than using the tech tip, but I was leary about sending it out of the bay that way. Anyone have a diagram or knowledge as to why my idea would not be a good idea?To master and control electricity is perfection. *evil laugh*