Alky Control posted a new Meth pump where it uses a pressure switch in the filter. Its supposed to be mounted near the pump and direct swap for older units. My filter is right before the nozzles which is like 12 feet aay from the pump. I also dont believe I have a pressure switch in my current setup. I think its built into the head of the pump. Maybe I should put the filter right after the pump, how Julio is describing it.
https://www.alkycontrol.com/shop/pump
"Brand New for August 2021. Pump and Switch. Plug-n-Play with our existing system. The new design moves the adjustable pressure switch post filter, so it will read true pressure from the liquid the nozzle is seeing. There is 30 inches worth of wiring between the pump and its pressure switch. If the filter in the system is located further than 30 inches, please contact us for extensions or adapters. Warranty will now be 18 months on the new pump. Below is the option for the short hose and inline coupler to allow moving the existing filter close to the pump."