LS2FD3S

hello all, I I have completed my swap entirely by myself but I'm not ashamed to admit that I know nothing about wiring, I purchased the atomic EFI based on the fact I know I could get it hooked up on my own, the problem is now I have finished the swap and the atomic is installed and I would like to hear the car run before taking it to a shop I have lined up to make a new chassis harness. I have the Atomic on the motor, battery in the back grounded and a long positive cable to the front. How do I supply the power to the Atomic system? Do I just ground the block to the battery and pip the starter after I do? I know it seems like basic questions but it confuses me. Thanks for anyone's help if you can offer it.