I've read all the threads I could find about fixing lighting for climate control, ive varied the aftermarket stereo is wired correct, I've checked all fuses. I bought new lights even though many of old ones are good, no constant lights work above shifter, 3 light up when pressed but the illumination does not! When I ground my test light and touch it to the lights the test light turns on. Actually on all 6 lights!!! Very frustrating any suggestions. FYI all instrument panel lights and dome , exterior work fine.