A/C Button Switch Doesn't Work
 

Trying to trouble shoot why the AC button doesn't light up when I turn the AC on. When I turn on the AC, the idle speed increases, but the light in the switch doesn't come on. I was looking at the wiring diagram, and it says there is a DIODE in the Under Dash Fuse/Relay box. When I google for this part, I don't find anything. Does anyone know what this diode looks like, and where it is located in the fuse box?

You can replace the button (part 80410-TK6-A01ZA) or just the LEDs in button.

In-line diode vs led in button
 

The wiring diagram shows a DIODE and is labeled as being located in the cabin fuse box. Do you know where in the fuse box it is located?

Below and to the left of the steering wheel. Although it doesn't sound like a relay, the relays for AC are located behind the battery (need a skinny arm to get to it) There a 3 relay, two together are for the two fans and one in front is for the AC.