I also have the same system. I was loosing one of the signals a few times from one of the tires and called the company. They sent me the larger antenna to replace the small 1 inch one that came with the system. There is 6/8 feet of wire so you can mount the antenna just about anywhere in the truck. I have had the system for 5 or 6 years now and have not lost a signal since replacing the antenna. Its a 40' 5er and I mounted the antenna on top of the rear view mirror. I like it since you do not need power as with the repeater...