Ticking sound coming from battery box area

[kupchu9702]

Somebody may have already mentioned that the hot water heater is right next to the electronic box under the drivers side lounge on the Grand Tour's. The hot water heater starter ticks when it is trying to start burner. If for some reason the LP side of the hot water heater starter switch were in the on position and the LP cutoff switch at fill location was closed, the hot water heater would keep trying to ignite. However, since there was no LP getting to it, it would just keep constantly trying to ignite and thus the ticking. I say this because you originally said that it stopped when you turned off hot water heater it quit . Sorry if I am wrong on this. If it is indeed coming directly from electronic box and not resonating through it from hot water heater right next to it. If so I am not sure about electric issue. Others here have way more knowledge about this than I do.