(check related link)
Check all of the wiring connections. If the hum persists the rheostat can be replaced with a low rf emitting dimmer.
Yes, However not all fluorescent lights are capable of doing so. Check your local store to see which ones are usable with a rheostat and which ones aren't
how to test a rheostat?
Check fuse for parking/tailights Check the rheostat dimmer switch
Check to see if parking/tailights work same circuit Check bulbs Check rheostat that controls dimming feature
Replace bulbs? Check dimmer rheostat for open circuit Check fuse for parking/tailights
It is lost in heating the resistive material of the rheostat.
How do you install a rheostat in 1999 626 Mazda?
check the heater rheostat under the scuttle pannel(wiper area)they burn out
Check fuse for parking/tail dash lights Could be an open in dimmer rheostat
Check to see if parking and tailights are working - should be the same circuit - check fuses May be the dimmer rheostat needs replacement