Hi all For sale from an upgrade is a Whelen Model A490-TCCF power supply. MFR in 2011, installed in 2012. Working when removed. Excellent condition. This is the three comet flash pattern. This was removed from a J with an adapter base plate to fit the hole pattern on the wing inspection.  These have a STC and they are TSOd so should be a simple logbook entry for most any box replacement. They go for about $350 new - selling for $200 OBO plus UPS ground or USPS priority mail.  Here’s th