Opinion on universal wiring harness

Yes but for a '67, so cavities and colors will be different on your car.
In general, the concept is as shown.
View attachment 1715907018

Illustrated is the headlight switch on, powering the low beam relay (black wire).

Some people prefer to plug into one of the original headlight connectors. Thats how crackedback makes his harness.
I think Daniel Stern has a scematic for that on his website, although its not too difficult to figure out from above.
Seems straight forward enough I'll be tackling headlights once I go pick up some relays from the electronics store. Unrelated question I was looking over what I did for the msd with the intention to clean up some wiring, blue and brown wire from ign1 and 2 are hooked up to the small red but for some reason the blue wire from the voltage regulator and the alternator were also spliced into the connection is that the correct setup? There's no longer a balast in the car. It's a 70 valiant