Upgrading wiring harness on 1964 plymouth valiant

On the headlights, the wiring harness upgrade that our member @crackedback offers is WELL worth the money and is a great upgrade no matter which harness you use. It removes the high current load from the headlight switch and adds relays in the headlight circuit to carry the load of the headlights. My headlight switch in Vixen used to get hot with just stock sealed beams. I have converted her to Cibie H4 headlamps and now the headlight switch doesn't even get warm, plus, the headlights are much brighter, because they see alternator voltage.