Click to expand Tap to zoom Whelen Legacy Lightbar I/O Board by Whelen Engineering Sold out $519.35 | / SKU 02-0187275-00 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out Description Description Description Whelen Legacy Lightbar Replacement I/O Board, for Solo / Single color bars only. Mfg Date 10/18