Just installed cd player in 97 honda civic. Worked for a sec then stopped

Check all under dash and under hood fuses with a test light or multimeter.

My speedometer and cd player work intermitently, what's up?

I believe my husband did that. Its weird, my old player would work sporatically, so does my speedometer. Are hey related?

My old player would work sporatically,so does my speedometer are they related? Is this a grounding issue?