National speed depot wiring harness from Ebay

Hi, i have a 73' Dart Sport i am replacing the wiring harness in. I ordered and received a wiring harness from National Speed Depot off of ebay. I am wondering if anyone on here has used this wiring harness before?

1962 - 1976 Dodge Dart Demon Swinger Wire Harness Upgrade Kit fits painless fuse | eBay

I am wondering if you still have to run everything through the starter relay? This harness comes with no directions and alot of extras i do not need but may someday if i add them. I am currently just stuck on how i should go about wiring the ignition. Thank you in advance!
Welcome to FABO. Your thread was moved from cars for sale to electrical and ignition forum. Good luck.