I got my window switches done for my drivers side last night. My door switch was different than the one in the how-to I watched and I couldn't find one of mine, so I just had to find where the pos and neg leads go, then it was easy. The pre-99 look like this
http://www.f150online.com/forums/members/thejake1989-albums-led-pics-picture49129-positive2.jpg
as shown in this article
http://www.f150online.com/forums/articles-how-tos/399952-how-door-switch-led-swap.html
The 99 and newer look like this
I haven't done one of the pre-99, but I think that mine is easier, since you just have to cut the old bulbs out, and solder the new bulbs in. When I took the old bulbs out, I used my dremel and reamed out the hole and made it a little deeper, so that the LED bulbs were at the same depth as the stock bulbs. I bought extra bulbs, so I just used one bulb to test out and make sure it would fit before hand.
After the bulbs all fit, you can place in the new bulbs by bending the leads and putting them in the holder. Three of the four sets of bulbs were wired in series, and the other set was wired individually for each bulb.
The negative leads go to the resistors.
After I got all the bulbs put in and soldered, I tested them with a 9 volt battery
Since they worked, I put it back together and got it in the truck, but had a hard time getting a still picture
The LEDs are very much brighter than the old dim green lights, and I think they look great. They are like blue neons. I am going to try to figure something out so that I don't get the glow from outside of the switches.
I will finish the rest of the bulbs as I get time, and I will try to get some more info on how to do the steering wheel lights, and will probably do them next, just because I can
and I will try to get a better pic of the red LED that I have in there now for you guys too.
ENJOY!!!