Success! A HUGE shout out to @Scoutmaster for mapping this all out for us and for his patience in answering my many (and often dumb) questions! I thought I would share a little bit about how the project went for me.
1) Neither the defroster or the wiper worked on the first try. But, I was able to quickly find the problem. I had not fully seated the two of the pins in the fuse box (Fuse 6 and Fuse 15/pin 35). Once I seated those properly, everything worked.
2) I spent roughly $250. Dash and body harness (from an '04) -$125, wiper and defrost switches - $40, washer bottle with two pumps - $30, hardtop harness adapter - $25, 40 amp fuse - $8, 30 amp relay - $9, miscellaneous supplies - $12. I think I got a great deal on the harnesses....they are hard to find and the only other one I found was $315 on eBay for just the dash harness.
3) The hardest part for me was removing pins from the donor connectors. I had never done this before and got pretty frustrated trying to figure out which tool to use and how to use it. I had one of those cheap sets from Amazon that comes with about 80 tools. I never did figure out how to remove the pin I needed from the C170 connector and I ended up using a Dremel to cut it out.
4) I bypassed the C202 connector and just spliced those eight wires together using open barrel spade connectors and heat shrink. I did this for two reasons....I had so much trouble removing pins from the donor harness that I wanted to minimize the number I had to re-insert. Also, I'm 65 and not as flexible as I used to be so reaching up to access the C202 connector seemed like it would be a real challenge (@Scoutmaster did point out to me that the connector could be removed from it's bracket and removing the speaker would also allow better access).
5) I suck at soldering, so for the splices I used a red Posi Tap connector. I spliced the orange wires from the wiper and defrost switch to the orange wire on the HVAC control connector. Posi Tap connectors are pricey, but I really like them.
6) I ran the 3 ground wires to the ground screw at the driver's side dash speaker. I spliced the wiper and defrost ground wires together and ran a single ground wire from there.
7) I haven't tried the rear washer yet....not really sure how to operate that from the switch. I'm also not positive the defroster actually heats up....is there a way to tell other than wait until the window is foggy? The light on the switch does come on.
EDIT: I figured out the washer and it works as it should.
8) My TJ is an '06 and I couldn't understand why the FSM wasn't showing a C107 connector (either does '05). I later learned that for '05 and '06 it is re-numbered as C301.
9) I had one "oh shit" moment during the process. After I had inserted the pin in C170, I went to start the Jeep and got absolutely nothing. No dash lights, did not turn over, nothing. I thought I had killed it. Then I realized I had not closed the locking lever on the C170 connector!
That's about it. Looking back, I would do it again unless I couldn't find the harnesses at a decent price. My OCD doesn't like it when I have features that don't work. I will say I was a bit intimidated by the huge mass of wires that I started with (and ended up using only about 10!). Again, big thanks to @Scoutmaster and feel free to reach out to me if I can be of any assistance.
PS This is where I sourced my harnesses, washer bottle and switches. He says he has a "bunch more" '03-'06 automatic hardtop harnesses.
http://www.briskeymountain4wd.com
