I bought Sequential taillights for my 67 Camaro about three years ago and all of a sudden the left side one will come on and off but when it’s on it will stay on for a couple days it’ll blink on part of it or it will just be completely on I checked my relays and my wiring and everything is fine, it’s only the left side which is even more odd and sometimes it’ll be blink non stop and then turn off eventually and other times it’ll just stay completely on for a couples days and then turn off. Any advice?