hey guys i have a problem my spedo light sometimes work and sometimes doesn't when it doesn't work i hit the dash board a couple times and it comes back on. the climate control light also the same way so i think its a bad ground but where is the ground?

 

could be the dimmer switch.
what year civic?

 

its a 96 civic dx 4 door. the dimmer switch works fine?

 

the dimmer switch can still work and this problem still happen from a intermittently failing dimmer switch.