I finally got some time to get the pics. Here they are. First, some details on the type of bulbs I swapped out.
Here is what I found out. These specs are for a 2009 4Runner with the Urban Runner trim package.
LCD Display
2 10mm bulbs
Control knobs
3 8mm bulbs
Defroster and Recirculate buttons
2 8mm bulbs
Reset/Mode buttons
1 8mm bulb
These are measurements that I took of the original bulbs. I had used the info in this thread to make my own LED replacement bulbs. I bought the LEDs and resistors, soldered each of them up, and replaced them. I had some trouble with some of the LEDs flickering, which started me on my search for a straight replacement LED. I found them at superbriteleds.com. Here is what I purchased.
2 NEO4-W 10mm White LEDs (2 @ $1.29 ea)
6 NEO3-W 8mm White LEDs (6 @ $1.29 ea)
They were very easy to install. Simply unscrew the olds one, and put in the new LEDs. I gave them 1/4 of a turn to lock in place, then powered up the display to confirm polarity on the LEDs.
Here is an after picture. Please note that the HVAC knobs in the middle and on the right have the DIY LEDs installed. The HVAC knob on the left has the NEO style purchased from superbriteleds.com. I'll try to get a pic of the after because I swapped out all of the DIY LEDs for the NEO style.
NeoWedge series LED Lamp Specifications
Here is a shot of the back of the HVAC unit. I marked the different LEDs accordingly.
It was definitely a challenge to solder the LEDs and resistors in the small bulb holder. I also had to drill out the two openings for the legs of the LEDs as they were larger than the stock bulbs that I replaced. If I had it to do again, I would opt to buy the new LEDs instead of making my own.
Comments/questions welcomed.