PSA - (part #s) 936TL&B-12V or 936TL&B-24V Tail Light with Beacon (combination) assembly for replacement applications. This unit is self-contained, requires no external power supply or modifications for installation. Fits in the same foot print as your current Grimes or other incandescent tail light unit. Drawing less than .2 amps, you will save 2 amps in the circuit and gain a beacon to boot. No RFI, runs cooler and longer. Available in 12V & 24V. NON-PMA