If you don't hear that vibrator buzzing, then you should check your fuse. If your fuse is good, and still no buzz, don't leave it on. You'll fry it. Not so. No damage if the vibrator is not working. Open your vibrator by prying the base open carefully and inside there are contacts just like your points. Make sure they aren't rusted solid, and file them like you would your points. Recrimp the cap on, and try again. You really shouldn't run it too much without knowing whats really wrong with it. If the vibrator dosen't work it should never be replaced until the Buffer condenser is replaced When that switch is on, you will still have B+ voltage whether that vibrator is working or not. Check the Buffer cap, if your vibrator works but no music/noise. If your cap. is working, it will usually make some sort of a "pop" when you turn on the radio. You might wanna check the speaker for rot as well. Several companys put new voice coils in old speakers. But for the time being if necassary you can swipe one out of a late model Ford, the dementions are the same, and the ohms are very close in rating. Good Luck.