Upgrading the S1 Lotus Esprit Fan Switch

The original S1 Esprit had a fan switch embedded into a long aluminum cooling pipe that runs from the top of the engine to the ‘chassis tunnel’ cooling pipes. By the look of my car and all the water damage around the pipe when I removed it, these switches were prone to leaking. So I cut that section out of a new aluminum pipe and replaced the fan switch with what should be a more reliable solution. I used a 32mm water temperature sender adapter and an aftermarket fan switch to fit the 1/8 npt recess.