Had some hard starting issues after my Fass installation. Tried different ways and found this to work the best up in Canada's winter. Ran an extra wire with alligater clips from Hobbs switch to battery for bleeding the system after filter change. May help some of you with the hard starts due to diaphram issues.

 

Sooo sorry people, I screwed up on the schematic I posted. Me bad
This is the one I ended up with and works great.