Just got a sticker sheet to put on my Jeep, for some offroad events I'll be competing in over the next couple of months. There are a couple of stickers I'm not 100% on though. I know blue triangle goes on the body to indicate where the battery is, and the Tow stickers are pretty self explanatory. The ignition off arrow is also pretty self explanatory, but I've got nowhere inside the vehicle to put it so might give it a miss. I've still got a red E with a circle around it, and a lightning bolt type sticker which I'm not sure the purpose for. Can anyone enlighten me?