Problems with the lights in guages

[HoleshotKFX400]

Anyone know what color wire the hot to the lights that make the guages glow when you turn the dimmer switch. Ive studied the wiring diagrams top to bottem and cant figure it out. I think it might be LTGRN/YEL but im not sure

 

[wade]

I did this up awhile back. Maybe its what your looking for.(?) My wiring diagram is from Helm Inc. (OEM) and it does not show a LG/Y wire going to the I/P. Nor, do I have a LG/Y attached to either of the connectors.
'89 Ranger/Bronco2 Instrument Panel Pin-out
Let me know.

 

[HoleshotKFX400]

So what color wire do you think it is wade, I found on another wiring diagram that the illumination for the radio is red/blue so i was thinking about just splicing into that... Lets see some pics of that ranger of yours