Is this the one you used from Jegs?You would be insane to not run the relay and the cutoff switch. No offense man. That's just really dangerous otherwise. Should use a hot wire from the switched power (like ac fan motor or something) and connect that to the energize wire on the relay. Ground the relay, connect a hot to the relay from the battery and then run the hot off the relay to to the power wire on the pump. That's if you are running without the safety switch...I will say that I cannot remember exactly how that wires in there at this particular second. I bought a relay kit and a safety switch from Jegs. Well worth the added piece of mind.
That's true mostly. The bottom of each injector has a tiny resevoir in that you could justify as a "fuel bowl", but yeah, it's a pretty tiny amount of fuel compared to a carb bowl filled with a float so that makes plenty of sense why it is there. I put mine on there strictly for safety reasons. Fires are scary. Trust me. I had my truck almost burn up once from a backfiring carburetor. Scared the crap out of me. I also helped a guy pull a damn drunk out of a burning Mustang one night about 5 years ago. I almost had to watch him burn to death. That idiot was very lucky. His BAC (blood alcohol level) was .28. What an asswipe. As a result I keep a a fire extinguisher in every vehicle I own.The oil switch closes connection at 4 PSI. There will not be any more cranking then the normal starting of the engine. So you will not notice anything different.
The TBI don't have a fuel bowl like carbs. And the switch is factory wired from factory to the relay and oil switch.
I mistyped pump in above question, should have been relay, just like Raven said. Relays use a low amp signal to control a high amp switch.OK I got the relay kit from Jeg's, in the instructions it doesn't show an oil pressure switch in the wiring diagram. Should it be installed between the switch and relay or the relay and pump, or does it matter? I'm thinking between the switch and pump, the wiring pigtail I got for my pressure switch doesn't have very big wires.