It was only at the weekend i used it ,its not very warm over here at the moment but here is the pics .Since i have put the new spedo in it is mounted ina small box with the receiver high up on the chassis it works for me ,if it does start to over heat i will get a bigger box and make a vent in it to cure that . Before i used a waterproof speedo but the reverse was not that good for what i needed .The box is from a local electronics store ,it also keep's the truck tidy