I had noticed with the lights on at night that the there is a space in my dash lighting between my right speedo and left tach numbers that was not there. So one night while filling up with gas, I press to reset the trip odometer and light comes back to this one spot ......with the dash all illuminated as it should be.

However, this does not last for long.. but once again resetting the trip odometer brings that one spot on the dash back with light. Loose connection somewhere ....but how does this dash lighting work to know what I should be looking for to fix?

Thanks in advance for any guidance/tips you can provide!