Defective oil sending unit, blown bulb.
There is either a short or loose wire. If there is a bulb, it could be going bad.
The quick way if the bulb is flickering or out, replace if still flickering or out you need a new ballast!
No, flickering is not an adverb. Flickering is a verb form that can show continuous or repeated action, like "The candle was flickering." If used as an adjective, it could describe something that is shifting or wavering in brightness.
Defective flasher relay if none of them flash. Burnt out bulb if only one doesn't work.
This would most likely happen because of a short in the lamp, a short in the power supply for the lamp, or because the bulb is not screwed in tightly, the bulb is defective or the socket that hold the bulb is defective. A properly working lamp does not cut off unless the wiring that gives it power is defective or the power supply cuts off,
this could be a blown fuse, defective flasher, loose connection, or burned out bulb tk
using an ordinary bulb shouldn't effct it the holder that the bulb could be broken or corroded
Blown fuse or wiring defect for the bulb you have already replaced. You have replaced the wrong bulb. The new bulb was defective.
A bulb would cause it to illuminate!!
Usually a burnt out bulb
it will be the one that is dark