Wiring in a Relay to Ignition Switch

I wanted to wire in a relay to take the load off the ignition switch, but I am not sure I understand how to wire it, due to the start vs accessories.

I have an EZ wire harness and it is all wired and working fine.

Here is how the ignition switch is wired, how would I introduce a relay?

Mopar -------Ez
Red -------> Ign main power (red)
Yellow ----> Ign Switch start (Purple)
Black -----> Accessories (Orange)
Blue/brown (jumped together) ---> Brown/Pink (jumped together)

You mean for the starter function or the power to everything?
Starter function already has one.