Incredible T12 Light Fixture Ideas. Web the t12 fixtures tended to use magnetic ballasts. This is usually a raised metal cover that runs down the center of the fixture and is secured in place by screws or tabs.

These plug right in and work off the existing ballast. #1 home improvement retailer store finder Web for the easiest and quickest t12 to led upgrade, the philips universalfit tubes are probably your best bet.