LD4B installation on a 75 318

The original manifold may have had a choke timer mounted to it. It is very useful to extend the life of the choke element. It's job is to cut the power to the element after several minutes. They are usually mounted to the intake. They are nothing more than a a little relay with a heater and a bi-metal bar. Since they are mounted to the intake, they are somewhat sensitive to both ambient air temp, and engine temp.I always thought they did a great job. Jus saying.