EFI power

I asked this in a roundabout way on a previous thread, so want to clarify I’m not screwing up. Need power to Holley Sniper, 12v while cranking and running. Supposed to draw less than 3 amps. I put a jumper off the blue and brown wires on the steering column connector. See the pink wire in the photo. Now read something that suggests putting a diode in there somewhere to prevent “back feed”. Don’t know squat about diodes, and not the sharpest on electric in general. So is what I have done going to cause issues? I have headlights and electric FP on relays, and Crackbacks alt-Batt connection. Bulkhead connector has been disassembled and is in good shape.