72 duster firewall wiring questions ???

Excellent points by both of you guys, I was planning to just use my small zip ties and loom the wires back up. Thinking I may end up wrapping them back up like they were, should support them better and give them some bit of protection... Just a bigger pain when rerunning / tracing any other electrical issues down the road. I will measure the voltage drop as you specified. I hope a second relay installation is not required, but it can be done if necessary. If I do have to install that relay just use the switched blue wire as my trigger and power the relay off the positive terminal on the starter relay?

Only thing I plan on running under the hood on the keyed 12 volt circuit would be the new HEI distributor. Just trying to figure out where I would break the blue wire to feed the relay. Would have to be after the blue / brown splice in order to not lose the 12 volts to the relay when cranking.

Terminal layout
30 outbound 12 volt terminal
85 Relay ground
86 Keyed 12 volt signal wire
87 Source power from battery positive on starter relay

Any of you guys ever use WAGO Wall Nuts?? Pretty handy for multiple wire splices like this keyed 12 volt deal