If you’ve got t/t on your remote at the steering wheel, I bet it ties into there (probably under the dash somewhere). So, you could have a loose connection at the switch, at the tie in, or you could just have a bad switch, too. I’m going to guess you have a 3 wire system, which includes a red for the main power, which probably goes into the middle connector. Then two other wires, I think blue and maybe purple if I remember right.
Hopefully that’ll give you a good starting point and you can troubleshoot from there and find the problem.