The sequential trigger is used to activate the black box in late 69, 70 and 71 T-Birds. This replacement sequential trigger is designed to work with the original black box supplied by Ford. It will not work with the new black box. The new…
The original electro-mechanical sequential flasher is the component in the truck that looks like a small white plastic box with a small electric motor mounted on it. The replacement sequential flasher is solid state electronics mounted on…