Going turbo and will be running a dual 450 wall to, 210# Bosch injectors, Holley intake with a Holley fpr the -8,-8,-6 one, was wondering what Hobbs switch to go with, so many out there just want to get the right one, and if anyone has a diagram of how to set it up.

 

I use the $20 ones from ebay, part number 76575. They are preset at 4 PSI and can be adjusted upwards a little.

Just run either the ground or trigger of the fuel pump relay through it.

 

4 psi is what i have also, i set mine up to come on with ground

 

Why not run both pumps all time?