So i got my new 08 psd f250 last week, and i love it. So as i was noticing other new 08's i saw they had the clearnce lamp/lights on the roof and saw that i didnt get them when i purchased my truck (lame, i know...) but anyways im going to order the lights and wires/harness from the dealer on monday. My question is does anybody know how to install these properly... i was reading up on it a little and i know i have to drop the headliner... so i was wondering if anyone could give me some info on how to do something like this. Also i was thinking about how i am going to get the lights perfect looking (oem) as the other 08's so i was going to make a template from another truck and just lay it down on mine and drill the holes... does aybody have any other suggestion on what i should do? Also what kind of silicone should i use to seal the holes underneath the lights once i lay them down, i dont want any water or anyhting leaking through at all! any information or process on this would be very much appreciated. Thanks in advance.