My Bronco died on me the other day and it had to come home on a rollback. I gave it a lil shot of ether and it started. I figure the fuel pump is out. Before I swapped any parts . I checked to see if power was getting to the pumps. Neither one of the pumps are getting power. I checked the inertia switch and it has been bypassed but there is no power there. The fuel pump fuse is good. Where does the inertia switch get its power from? there is no power on the gray wire comming through the firewall that goes to the inertia switch. does any one have a fuel system electrical diagram?

 

ok I had a brain fart. I have power at the fuel pumps. i just had to check it before the relay kicked off. the low pressure pump is working. The high pressure is not. Kinda explains why i dont have pressure at he fuel rail does'nt it?