Key on starter voltage drop

[71340RT]

I ended up adding the relay to run power from the battery. I ran my ignition on wire from the ballast resistor hooking the brown and blue wire together and running one wire to the relay. This ended up with little voltage drop and the 392 Hemi fired right up. Thanks for all the input on this problem.

Would you happen to remember what relay you used?

It is just a 4 prong 40 amp relay and seems to work fine.