Electric vacuum pump for engines with low manifold vacuum.

Here's a link to my build -- sites.google.c...
Parts list shown below which might help someone current day. (9/2022)
The Hella Solid State Relay wiring differs slightly.
Using a standard relay harness your fused\key on power 12v supply will go to pin 30, the output 12v load is pin 87 (this is the feed voltage to the pump). You will provide a constant ground to pin 85. Your trigger wire is a ground switched by the pressure switch to pin 86.
Standard Relay Harness
Standard Inline "Add a Fuse" w\30 amp fuse
Hose Clamps
Hella Solid State Relay (SUM-760155-1)
www.summitraci...
GM Power Brake Booster Pump (Part # 20804130)
www.amazon.com...
Jegs Vacuum Canister (Part # 555-63010)
www.jegs.com/i...
Summit Racing Vacuum Pump Switch (Part # 931774031)
www.summitraci...
3/8" One-Way Check Valves
www.amazon.com...
5' of High Temperature Silicone Vacuum Hose
www.amazon.com...