I race with an antique oval track association where we run on 1/2 mile horse racing tracks in and around Ohio. Everything works out really well with this but the B.O.D. and I have discussed making a couple of caution lights on stands to replace corner workers. What I am envisioning ...errr thinking is making a portable stand that we would set up with 2 or 3 L.E.D. amber lamps powered by a 12volt car battery. Basically the lamps would use a turn-signal flasher to allow them to flash. Now here is the dilimia. These tracks that we run on are just a temporary event where we are on the track for about 4 hours a day --one weekend a year, so permenantly mounting something is not a good option for us. I realize that from the flag stand (inside of track between turn 4 and turn 1) to turn 2 and turn 3 is likely in the 200 yard range, and I know that DC voltage does not like that distance to run on stranded wire, so I am thinking we need some type of switch that can be operated remotely. Any ideas?