Guys i no you have probbaly been throught this before but i am in need of your help .
My kids dash lights went out 7 months back then 2 months ago the radio went out i dii all the checks i found on line.
The dimmer ohms good i have gotten the lights to work buy grounding out the clock red wire and the lights will come on.
Now last night the radio started to work the only other things done were i cleaning engine parts (EGR).

Is it the multiplex unit

Please any help will be greatly appreciated