I suspect a disconnected wire, it seems to be the only solution. My interior courtesy lights, running/front turn signals and rear running/turn signal lights were all out. I found and replaced a single fuse and got back my courtesy lights and the rear running lights (with headlights on). But the front running lights/turn signals and rear turn signals do not turn on and/or blink.
I have checked the wiring in the trunk, headlight buckets and under the dash. I also replaced the flasher unit (it is fused) with no results. does anyone have any hints what I need to look for? Is there a second fuse on the fuse panel that may be blown? Only lights I notice that do not work are the front and rear turn signals and the front running lights (shared light with the front turn signal). No flasher unit click or any of the 4 lights come on or the dash indicator either.
They all worked fine when I took it to the shop to get a transmission leak fixed and now are out.... Haven't checked the dash lights since it is daylight.
any advice for isolating the problem? a certain area that would only affect these lights? Does a bad bulb stop them from working? (the bulbs look good...not tested yet)
I have a new turn signal/wiring harness in the steering wheel and LED tail lights, but they have all worked no problems for the last year.

 

Wiring is a PITA.
The LED taillights require an electronic flasher (NAPA, cheap) if you put in a regular one that might be why the directionals don't work, but I don't think it would cause the fronts to not even light up.

Because you did have a blown fuse I'd pull the bulbs and take resistance readings as much as possible referencing the wiring diagram. Maybe they crushed or yanked a wire working on the tranny.
All other wiring can be found under the FAQ section.

WIRING.

 

I put a electronic flasher unit on order with NPD last week, expect it tomorrow. Although I didn't think that is the problem either. They worked fine for a year.
I did find the problem using the same schematics you provided (I have the book version).. Since the fuse is supposed to be in the flasher unit, I did not expect there to be a "Flasher" fuse as well. I had to take my instrument panel out in order to get to the very top fuse, which was marked "Turn Signals 14amp"... It was burned out.
Now all the lights work 100%. I would like to mention the new "bulb" fuses. They make life so much easier. If the fuse blows, they act like a light bulb. Glowing to show you which fuse is gone. The first fuse was easy to find since I just had to glance under the dash and see the little glowing "bulb" to see a fuse was gone. Also just put one in the 14amp spot since it is so hard to get to, will save a lot of time and trouble if it goes again.
Thanks for the advice, Oxnard!
Ed