Here is a DIY on replacing lights for your climate control. I have a 2005 EXL R&N with auto climate control.
It takes two types of bulbs:
4 gray base bulbs that act as a backlight for all climate control buttons:
part number: 79674-S3N-941 (BULB, NEO-WEDGE (14V 80MA))
2 black base bulbs that act as a backlight for climate control lcd:
part number: 79607-SHJ-S01 (BULB, NEO-WEDGE (8V 0.1A))
here is the picture of the gray base bulb I had to replace
here is the picture of the back of the climate control
There are multiple instructions on how to remove the dashboard piece. But here is a quick review.
1. Open upper glove box. Look carefully at the seam of where plastic trim lays against main dashboard. There will be a small opening for a flat head screwdriver.
2. Take a small flat head screwdriver (you can wrap it in electric tape) wedge it into the opening and carefully pry at it.
3. This should allow you to lift this corner of the trim, then using your hands carefully pull along the edge of the trim until you pry the entire piece.
4. Disconnect 3 harnesses that plug into the trim piece.
5. Turn the trim over, and you will see the back of the control, like the second picture above.
6. Using flat head screwdriver turn the base of the bulb quarter turn counter clockwise. It should unlock the base of the bulb. Shake the bulb out of the control.
7. Insert new bulb. Using flat head screwdriver turn clockwise until it snaps in place.
8. Reverse the procedure to replace the trim on dashboard.
I had one gray base bulb go bad, the one that backlights the first 3 buttons in the left lower corner. I bought a new bulb assembly at the local dealer for 3.02 + tax.
You can also experiment with replacing just the bulb and reusing the base. Here is a thread that explains it how to do it with Radio Shack bulb part #272-1092
Using radio shack bulbs
12/2/2009 update: use below DIY to handle burned out Hazard lights, as well as use Radio Shack bulbs.
I see that you guys are enjoying my DYI, so I decided to update this post with more bulb replacement info.
A week ago I noticed that "Hazard flash" and "passenger air bag" lights were out. I went straight to Radio Shack and bought a pack of bulbs, part number (272-1092, #7219, Micro Lamp 12v).
The package contains two bulbs, which is perfect for this job. Price is $1.79 plus tax, which is probably expensive but still much less than dealer and about 1000 times more convenient, cause dealer does not stock these bulbs. Using Radio Shack bulbs adds about 1min to the entire process. Super easy!!!
So for this DIY, follow steps 1-5 above.
6. The hazard switch is actually an independent assembly that is easily removed from the dashboard assembly by squeezing two tabs. One tab at the top and another at the bottom of the assembly. Then push the switch assembly into the dashboard piece and it will slide right through and out.
7. Lay the switch assembly on the left side with two blue circles facing up.
8. The two blue circles are the bases of the mini bulbs.
9. Using flat head screwdriver turn the base of the bulb quarter turn counter clockwise. It should unlock the base of the bulb. Shake the bulb out of the control.
10. The top bulb that controls "Passenger airbag" has a blue sleeve that slides over the regular clear bulb. The bottom bulb assembly is clear.
11. Unwind the wires of the bulb assembly and separate bulb and the base.
12. Use the new Radio Shack bulb and place it into the old base.
Wind the bulb wires around the base, like original assembly. Trim extra wire. Make sure the two wires are not touching.
13. Insert new bulb. Using flat head screwdriver turn clockwise until it snaps in place.
14. Reverse the procedure to replace the trim on dashboard.
Here is the picture of the dash assembly with switch assembly highlighted
here are pictures of the switch assembly and the bulbs
Below image was donated by Hondalvr. It is a comparative picture of the stock vs Radio shack bulb, plus the sleve and the bulb base:
There is no end to this saga. Replaced the main lights on/off switch light this weekend. Picture attached.
There is no need to remove the switch, you can remove the blue base bulb after removing the center console.
Also following my own advise I decided to document all the lights that light up in my car. It is kind of hard after the fact to figure out whether the button had a back light or not, so here is a collage of different places that I found had lights.
Here is a useful link to the diagram of possible Honda bulbs and p/n.
Honda Odyssey switch and bulbs