Finally got around to doing my exterior light project. These sources come from responses to my original post asking for info on clearance lights. (jor post (http://www.foreforums.com/index.php?topic=33140.msg299391#msg299391)) Here's what I did:
Front & Rear Clearance Lights: Incandescents from Ryder for less than $3 each (need 12). They come with a gasket and bulb.
Side Turns: LEDs from ChromeCountry @ $13 (ChromeCountry (http://chromecountry.com/store/18-Amber-LED-Freightliner-Reflector-Turn-Signal-with-Amber-or-Clear-Lens-p56361139)) Holes are different so you need to drill one. You also need to buy a 3 Wire Right Angle Plug which is made for this light.
Side Clearance (almost roof level): LED, PartSam. about $10 (partsam (https://www.amazon.com/gp/product/B00VGIAX66/ref=oh_aui_detailpage_o05_s00?ie=UTF8&tag=foreforums-20&linkCode=as2&camp=1789&creative=390957))
Mirror Turns: LED. Can't recall where I got them. Holes are different. Had to drill and tap one hole. No gasket so I ran a tiny bead of silicone around the base.
Brake Light: Incandescent from Ebay @ $70. Just need to cut and splice into the rig's wiring.
jor