If it won't trigger, ask the law enforcement for that jurisdiction what they think you should do. They are the ones that will ticket you and cause you grief if they see you run it on red. More and more of the lights in our area are made with a different way to sense cyclists. Perhaps if you let your public works department or whomever is responsible for the lights, then they'll look into getting sensors systems for the traffic lights that work for cyclists too. However if you don't say anything to them, they'll be more than happy not to do anything.