DevilsOwn Self-Sealing Float Level Switch

From DevilsOwn. Make sure your meth tank is never empty! Connect one wire of this switch to chassis ground and the other to the pump's ground wire. When the fluid level drops, the fault light on the controller will activate when the system sees your start point of boost. Can also be wired to an LED light (which is included).

To install, drill a 7/8" hole in a suitable flat location on the tank, insert switch and tighten down. As the large nut is tightened down, it causes a rubber ring beneath it to bulge out and firmly seal the hole. 

100% methanol compatable.

Sold individually.