Upgrade your Tail Position Lamp to LED by simply changing out your old incandescent lamp and replace it with PSA’s new LED75TPL-24V lamp. Fits almost all General Aviation Aircraft, Cessna, Piper, Mooney , Beech, Grumman, Ercoupe, Rockwell, etc. wherever one has the old Grimes tail light socket with a single contact non-indexed 15mm bayonet socket. Draws less than .2 Amps, longer life, and RFI free. No modification necessary. NON-PMA