Another Electric Fuel pump wiring question.
The power (10ga) wire feeding the fuel pump you want the circuit protection to be as close to power source as you can get it. So if coming right off the battery I would install a fuse from battery to supply wire. I say fuse because if it pops an actual circuit breaker may reset and if there’s a problem I wouldn’t want that. As far as the control of the relay for the fuel pump I’d also fuse that before the control switch then to oil pressure switch then to the relay. The goal is to protect as much of the system wiring with the fuse as possible. That’s how I look at it. I’m sure someone else will be along that’s got more input.