RC- modelling

Recently I have dried my car, taped some parts in order to isolate the wires from the water and I have tried another launch. The weather was wet, which gave me an opportunity to test my new construction out and it worked to a certain exten, however I have noticed that the ariel is not working well. Perhaps there is a probem with the receiver component. Now the car is a bt more water resistant than before and my aim is to get it ready for the winter season, film a short video and fix the signal problem.
Perhaps it is not clear on the photograph but an isolation layer of tape is presnt on the wires near the engine and the purple receiver.