99 Yukon Denali no dash lights Help!!

[billbies]

99 Yukon Denali no dash lights Help!!NO Taillights!!!

Just bought this truck a month ago and last week was driving home in the dark and I always just keep the headlight switch on auto well the dash started to flash off and on and it was completely dark out. So I turned headlight switch to top which is headlights on and stopped the flipping back and forth.
Then the last week they have worked normally dash lights off during day and auto turn on when dark.

No this morning No dash lights at all in all switch settings, all gauges function normal and work all indicator lights turn on, DRL green indicator on and shuts off when switch is turned , but no dash lights or switch lights
Checked all fuses in both fuse panels no corrosion, loose or blown fuses


Where do I go next!!!
Help ME
My drive home is in the dark and could be lots of fun with the weather we r supposed to get and a dash I can not see !!

Thanks In advance

---------- Post added at 10:19 AM ---------- Previous post was at 08:57 AM ----------

also wheres the photo eye in this truck so I can check that

 

[SunlitComet]

if you are sure the "illum" and "pk lps" fuse is good then look into the lighting ****-fuse in the under hood box. the sensor is part of the rear view mirror. need more info let me know exactly what light system is malfunctioning and how and I could get you the diagnostic chart for that problem. btw make sure you did not knock out any wires out of the convenience center as well.

 

[billbies]

I know the **** fuse is good under the hood,
The other two are good also
Convienence center where/what is that?
And basically all my outside lights/functions gauges are working properly but my interior switch lights and dash ligthting that illuminates it do not light up at all in any position on the headlight switch

 

[SunlitComet]

bottom left corner against firewall under dash. Can you verify with illum fuse removed that you have volts at one terminal when switch is on? if not you may need to replace the switch assembly.

 

[billbies]

Just double checked **** fuse under hood is good, "illum" fuse is good
pk lmps fuse BAD!! replaced with new and turned key on blew immediatley where do I start the search process for this???
Thanks for the heal so far

 

[billbies]

It keeps blowing the #9 fuse for pk lmps checked all bulbs all good except my let.turn signal is hyper flashing and flashing the 194 bulb also
So no dash light.NO taillights either

Help me !!!!!!

 

[SunlitComet]

check splices at these two location for breaks or shorts:

Forward Lamps Harness, approx. 6.5 cm from LH Headlamp Breakout toward Windshield Washer Pump

Approx. 15 cm from Headlamp Dimmer Switch Connector